Penis

The penis is an external organ that's used for both urination and sex. It contains spongy erectile tissue that fills with blood during arousal, causing an erection. Despite the slang "boner," there's no bone in it. Penises come in a wide range of shapes and sizes — all of which are normal.

• The penis is used for urination (peeing) and sexual activity.
• It has three main parts: the shaft, the glans (head), and the foreskin (if uncircumcised).
• Erections happen when blood fills the spongy tissue inside, making it hard and stiff.
• Penises vary hugely in size, shape, colour, and curvature. There's no "normal" look.
• The urethra runs through it, carrying both urine and semen (at different times).

[DIAGRAM: Labelled diagram of the penis (external view and cross-section) showing glans, shaft, foreskin, urethra]

The parts

The shaft — the main body of the penis. It contains two columns of erectile tissue (corpora cavernosa) that fill with blood during an erection, and one column (corpus spongiosum) that surrounds the urethra.

The glans — the head or tip. It's the most sensitive part, packed with nerve endings. In uncircumcised people, it's covered by the foreskin when soft and exposed when erect. In circumcised people, it's always exposed.

The foreskin — a fold of skin covering the glans. Not everyone has one — it's removed during circumcision. If you have one, pulling it back gently to wash underneath is part of normal hygiene.

The urethra — the tube that runs through the penis, carrying urine from the bladder and semen during ejaculation. The opening is at the tip of the glans.

The frenulum — a small V-shaped band of tissue on the underside of the penis where the glans meets the shaft. It's very sensitive and is an erogenous zone for many people.

Size

Penis size is one of the things young people worry about most — and it's almost always unnecessary. The average erect penis is roughly 13-15cm (about 5-6 inches) long, but there's a huge range of normal on either side of that. [CHECK: current commonly cited average]

A few things worth knowing:

• Soft size doesn't predict erect size. Some penises grow a lot when erect ("growers"), others are closer to their erect size when soft ("showers"). Comparing soft penises — like in a changing room — tells you very little.
• Porn is not representative. Performers are selected partly for size, filmed from angles that exaggerate it, and sometimes digitally enhanced. Using porn as a reference for what's normal is like using professional basketball to judge normal height.
• Size matters much less than people think. Most partners care far more about communication, effort, and respect than about measurements. The vagina is only about 8-10cm deep on average, and the most sensitive parts (the clitoris and the entrance of the vagina) don't require a large penis to stimulate.

Shape and curvature

Penises aren't all straight. A slight curve — up, down, or to one side — is very common and completely normal. It usually doesn't cause any problems. A more pronounced curve, especially one that develops suddenly or causes pain, could be Peyronie's disease, which involves scar tissue forming inside the penis. This is treatable and worth seeing a GP about.

Hygiene

Wash your penis daily with warm water. If you have a foreskin, pull it back gently and rinse underneath to remove smegma (a natural buildup of dead skin cells and oils). You don't need special products — plain water or mild soap on the outside is enough. Avoid getting soap under the foreskin, as it can irritate the sensitive skin of the glans.

Things people get wrong

"Bigger is always better." It's not. Sexual pleasure depends on what you do, not on size. Most surveys of what partners actually care about put communication and attentiveness well above size.

"Your penis should look like the ones in porn." Porn shows a very narrow range. Real penises vary in size, shape, colour, and curvature. All variations are normal.

"If your penis curves, something is wrong." A mild curve is normal. Only a severe, painful, or suddenly developing curve needs medical attention.

Things people ask about the penis

Is my penis normal?

Almost certainly. Penises vary enormously — in length, girth, shape, colour, and whether they're circumcised or not. Unless something is causing you pain, difficulty peeing, or problems with erections, it's fine as it is.

Why does my penis look different from other people's?

Because bodies are different. Circumcised and uncircumcised penises look different. Skin colour varies. Some curve, some don't. Some are bigger soft, some are bigger erect. All of this is normal variation.

What are the small bumps on my penis?

If they're a ring of small, pearly bumps around the rim of the glans, they're pearly penile papules — completely harmless and very common. If they're Fordyce spots (small, pale bumps on the shaft), also harmless. If bumps appear suddenly, are painful, or look like blisters or warts, get them checked at a sexual health clinic.

Can you break a penis?

There's no bone, but you can fracture the erectile tissue if the penis is bent forcefully during an erect state. This is rare but serious — it causes sudden pain, swelling, and bruising, and needs A&E treatment immediately.

Where to get help

• Your GP — for any concerns about pain, curvature, lumps, or difficulty with erections or urination.
• Sexual health clinics — for bumps, sores, or STI concerns.
• NHS 111 — for advice on whether something needs urgent attention.

The penis is the body part between a boy's or man's legs. It does two main jobs: weeing and sex.

It has a few parts. The long part is called the shaft. The rounded tip at the end is called the head (or glans) and is the most sensitive part. Some people also have a loose fold of skin over the tip called the foreskin. If this has been removed (through an operation called circumcision), the tip is always uncovered. Both are normal.

When someone is sexually excited, blood flows into the spongy tissue inside the penis and it gets hard and stiff. This is called an erection. Despite the slang word "boner," there's no bone in it.

Penises come in lots of different sizes, shapes, and colours. Some are longer, some shorter. Some are thicker, some thinner. Some curve a bit to one side. All of this is normal. What you see in porn is not a good guide — those bodies are chosen and filmed in ways that don't represent what most people look like.

Size matters much less than most people think. What matters more is how people treat each other.

If you have a foreskin, pull it back gently and rinse underneath with warm water when you wash. That's all you need to keep it clean.