2 boys standing in front of a window

Child erections. How to have shame-free conversations with your child

Inside: A guide to help parents to talk to kids about child erections without shaming them or worrying about what’s normal (or not). You’ll find information relevant for children of all ages. 

A common request that I receive from parents is about how to explain child erections (or boy erection).

They may ask ‘When do boys start getting erections?’. Or their child may have started asking questions about why their penis grows bigger or harder. Or an older child may ask about why their brother’s penis sometimes sticks out.

As a parent, child erections can be challenging as we often associate erections with sex.

So it is perfectly understandable if answering child erection questions can make you feel uncomfortable.

As adults, we see an erection as a part of sex, and seeing your child’s erect penis or answering their questions about them, can feel awkward. Plus we often worry about whether we are giving them too much information, as many of us worry about whether our child is actually ready to hear about sex.

So how do you talk to a child about erections, in an age-appropriate way?

You’ll find more information about sex education in my Sex Education 101 page.

When do boys start getting erections?

So when do boys start getting erections? Or boners (as they are commonly called).

‘Little boy’ erections start from the very beginning.

Child erections are just one of those things that happen and shows that your child’s penis is working properly.

By ‘working properly’, I mean that their penis is capable of becoming erect so that when they are grown up, they can use it for the penetration part of sexual intercourse.

Your child’s penis has been in ‘working order’ from the very beginning as a newborn. Some say that this was even happening when they were in utero, as a fetus inside your pregnant uterus.

So it is completely natural and healthy for your child to have erections throughout the day and night.  And all it means is that their penis is working properly.

Now, don’t be surprised if you don’t notice your child’s erections until they are a toddler. I receive quite a few questions from parents about toddler erections too! So you can relax, as there is no sexual meaning whatsoever behind your toddler’s erection.

child having nappy changed
So when do boys start getting erections? (They get them from the very start)

How does an erection happen?

Erections are all about increased blood flow to the penis.

The brain sends a chemical message to the blood vessels in the penis. The arteries relax and open to let more blood in. At the same time, the veins close, trapping the blood inside the penis. There is a lot of spongy tissue inside the penis. 

When it is filled with blood, that soft spongy tissue will go firm or hard, making the penis expand, because of all the extra blood inside it. The penis will become larger, firmer, and stand out from the body. It is now erect.

When the erection is over, the veins will relax, letting the extra blood back into the body. At the same time, the arteries will close, only letting a small amount of blood into the penis. The penis then becomes soft again.

And that is how a males erection happens, regardless of whether they are a baby, toddler, child, tween or teen!

Why does my child have erections?

Child erections usually happen for no particular reason at all.

We call these a spontaneous or involuntary erection ie when the penis becomes erect for no particular reason. Sometimes it can happen when they are overexcited during play or other intense occasions eg birthday parties. It can also happen when they have a full bladder and need to go to the toilet. As your child gets older and goes through puberty, voluntary erections begin to happen ie. they begin to happen more frequently because of sexual thoughts and feelings. 

Puberty is that time when the body starts to change into an adult body that is capable of reproducing. Which means that as well as being fertile and having an adult body, the brain also changes. Which means that for the first time, your child will start to have sexual thoughts and feelings, resulting in an erection.

They’ll still have spontaneous or involuntary erections that happen for no particular reason, but these will now start occurring more frequently, often in the wrong place or time. And eventually, as they progress through puberty, spontaneous erections become less common.

And as they go through puberty, kids will notice morning erections, ie. erections that happen on waking up in the morning. This is often referred to as morning wood and can happen for a range of different reasons. So if you’re unsure about how to explain morning wood to your child, just explain that it happens to lots of boys and it means that their penis is working properly.

teen age boy going through puberty
Erections happen a lot more often during puberty

Should you ever worry?

Usually, there isn’t anything to worry about. Child erections are usually completely natural and healthy.

There’s a couple of situations though when erections can be problematic.

If your child’s erection lasts for more than a few hours or if you notice other unusual symptoms like rash, fever or discoloured skin, then you should seek advice from a health professional.

Priapism, a painful erection that lasts 4 hours or longer, is rare in children but requires urgent treatment.

Phimosis is when the foreskin does not retract past the glans (head) of the penis ie the foreskin is tight. And in case you are wondering when the foreskin does retract, the proportion of boys in which full retraction is possible is: 10% at 1 year, 50% at 10 years and 99% at 17 years.

You can read more about how to look after your child’s penis and foreskin from The Royal Children’s Hospital Melbourne’s Fact Sheet on penis and foreskin care.

If you are ever unsure, I am a firm believer in trusting your ‘gut instinct’. If your ‘gut instinct’ tells you there is something wrong, then seek advice from a health professional.

How to explain erections to your child

So how do you go about explaining erections to your child? There are a number of things you could say.

For baby and toddler erections, you can just ignore it or acknowledge the erection. You could just comment that their penis is poking out/getting harder/growing bigger, name it as an erection and reassure them that all penises do that. Try to respond in the same matter-of-fact way that you would use if talking to them about their toenails!

As your child grows older, there’s a number of different conversations you could have.

Let your child know that boy’s erections are normal and they happen to all boys (or kids with penises). You can find some cartoon illustrations (that include erections) in this child-friendly resource.

Make sure that your child knows that the part they are referring to is called a penis and that when it grows hard (or bigger or however you want to describe it), that is called an erection. You can read more in this article, about how to start naming the private parts of their body.

An erection happens when extra blood goes into the penis. It means that their penis is working properly.

You could also explain that their penis is practising for when they are older and are ready to have sex.

As your child approaches puberty, you should let your child know that they will start to have more erections than usual and that they can happen at the wrong time and in the wrong place.

This is also a good time to start talking about wet dreams, ejaculation and sexual feelings.

If you’re unsure about how to start talking with your son about these things, then my puberty book for parents.

Care of the penis & foreskin

A lot of parents are unsure about how to care for the foreskin, especially if dad is circumcised. The foreskin doesn’t require any special care and should never be forcible pulled back (retracted) by a parent.

So because this is a question that parents are always asking me, I have written a blog post about Penis and Foreskin Care (for kids of all ages).

Resources to help with talking about bodies

My mission is to create resources that will help you to naturally talk to your kids about sex, all while respecting your personal values.

Which means that inside this website, you’ll find lots of resources to help you with talking to your child about bodies.

My Sex Education 101 page includes all of the information on sex education. You’ll find lots of different blog posts to help with getting started, on a wide range of different topics – bodies, consent, diversity, porn, sexual intercourse and more.

You’ll find videos about sex education (and bodies) in my Sex Education Videos resource page that you can watch with your child or to learn more about sex education yourself.

You’ll also find an extensive range of sex education books for children, for kids of all ages. There are even some books in there for parents! And a list of children’s books about bodies and children’s books about private parts.

If you’re looking for some ideas on how to talk to your child about bodies, How to Talk to Kids About Bodies, will help you to start naming the private body parts and to have shame-free conversations with them about bodies. It is filled with lots of different ideas on how to have natural conversations with your child about their body. 

You’ll also find some child-friendly anatomically-correct cartoon illustrations of the genitals and internal reproductive organs that are appropriate for children from the age of 3 and up. Let’s Look at Different Body Parts is a printable that will help take the awkward out of talking to your child about their body, so they grow up feeling educated, confident, and comfortable in their own skin.

Or if you’re looking for an activity that you can sit down and complete with your child, then you may want to look at my anatomically-correct Paperdolls. They are perfect for starting natural conversations whilst your hands are busy.

If you’re worried that talking to your child about bodies might lead to questions about sex, then you can relax. How to Talk to Kids About Sex, will help you to explain sexual intercourse to your child in a way they will understand. It breaks sex down into simple steps that  take the stress out of explaining!

If you’re unsure about how to answer your child’s questions about sex, then I have the perfect book for you! The Sex Education Answer Book will give you age-specific answers to the most common questions kid’s ask parents about sex. Which means you don’t need to worry about finding a child-friendly explanation that your child understands. 

And if you get stuck, feel free to get in touch! You can contact me here.

About The Author

8 thoughts on “Child erections. How to have shame-free conversations with your child”

  1. blank

    I was wondering if you could help me with this please can a boy 10 have intercourse with a girl 9 I’m having trouble grasping this as the girl has made this complaint that it happened 7times, against the boy. The boy says he didn’t and she’s always getting him in trouble. Help Please there both family trying too help the parents and children I believe the girl needs help she’s very pernicious for such a young age.

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      Hi Bonnie, I’m afraid to say that it is ‘physically’ possible. The best way to uncover what has happened is with careful chats so that you can work out what exactly happened, remembering to not make ‘assumptions’ when they use terminology like intercourse, and to find out what exactly happened (eg he put his penis inside my vagina or he rubbed his penis on my leg).
      Best of luck with helping this family.

  2. blank

    Hi, I’m Anna. I’m a single mom of an 11 year old boy. We still often at times take a bath together before going to sleep. One time as we were in the lying tub together i notice he often have erections and there was a moment he ejaculated. i saw it and did make a big deal about it. I wonder if my reaction is ok and how do I properly respond next time?

    1. blank

      Hi Anna, every parent handles things differently, and when we are handling things as they happen, sometimes we can react in a way that we might later regret.
      So I guess that this is a great time to be talking about puberty and the changes that will be happening to his body as he gets older.
      It can be tricky as kids hit puberty because they still need our love, but it can be awkward as they become more sexual beings.

  3. blank

    Hi I hope you could help me. Right now I am 18 years old and I feel like my penis hasn’t grown since I was 10 years old (it is small) I remember having my first erection when I was 8 and I don’t know if that might be a cause.

    1. blank

      Hi Alex, erections are something that all penises do (from when they were a baby with some ultrasounds even showing that they happen when a baby is still a fetus growing in the uterus). So that won’t have had an impact on your current size now.
      Also, when standing up and looking down at your penis, it will always look a lot smaller than it really is.
      Penises come in a wide range of sizes, they usually start to grow wider and longer during puberty. Some people start to change at an older age than other people, so you may still have some growing to do. Most males aren’t fully grown by 18, and will still be changing.
      Many people also compare their penis to what they see in porn. Porn stars aren’t picked for their good looks or acting ability. They need to have a big penis so that it looks good (and more impressive) on camera. So 95% of the population would have a small penis, if they compared themselves to a porn star!
      I hope that helps to answer our question

  4. blank

    My son is 3 years old and gets erections quite regularly. Can you please help me with suggestions on how to talk to him about it as it is essential that this issue is addressed in the right way..

    1. blank

      Hi Adam, I like to take the ‘everyday’ approach where conversations are open, honest and natural.
      So, you could comment, when he is getting dressed or in the bath, or if he comments, when his penis goes stiff/hard/pokes out (whichever words you are comfortable with) eg’See how your penis is poking out? That is called an erection and it to happens to all penises, even mine’ You could also add in ‘It shows that it is working properly’.
      Once kids understand that it is natural and healthy, they usually dismiss it as just another thing that bodies can do.
      I hope that answer helps, cath

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