Grower vs Shower
📏 7 min readAverage flaccid length: ~3.6 inches. Average erect length: ~5.16 inches. But that's just the mean. Individual men vary enormously in how much they grow — from barely changing to more than doubling.
What "Grower" and "Shower" Actually Mean
A "shower" is a guy whose penis looks similar in size flaccid and erect — not much of a dramatic change. A "grower" is a guy whose flaccid penis is noticeably smaller than his erect one, sometimes dramatically so. Most men fall somewhere on a spectrum, but both extremes are common and totally normal.
Clinical research confirms this is real, not just slang. Studies measuring both flaccid and erect length in the same men consistently find that the correlation between flaccid and erect size is moderate at best — not strong enough to use flaccid size as a reliable predictor for any specific individual. A classic urological study (Wessells et al., 1996) found that flaccid length predicted erect length poorly in a meaningful subset of men.
Visualizing the Variance
Here are four hypothetical men, all real possibilities within the normal range. Same erect size, wildly different flaccid starting points:
In a locker room, Man A looks enormous and Man D looks worryingly small. In bed, they're the same length. If Man D spent years comparing his flaccid size to other guys in gym showers, he'd have spent years being anxious about a number that turns out to be irrelevant.
Why Does Flaccid Size Vary So Much Within One Person?
Because flaccid length isn't a fixed anatomical number. It's a moment-to-moment response to blood flow, smooth muscle tone, and temperature. The same man can have a flaccid length that varies by 1 to 2 inches across a single day depending on:
So the guy you glance at in a cold post-swim locker room and the guy you glance at after a warm shower are, in a sense, not even displaying the same version of themselves. Flaccid size is a temperature-and-mood measurement as much as it is an anatomical one.
❌ Locker Room Logic
"That guy is huge, I'm tiny in comparison." You saw one flaccid snapshot of each of you, possibly at different temperatures, different stress levels, different activities. You have no information about either of your erect sizes from that comparison.
✓ The Actual Science
Flaccid-to-erect ratio varies from roughly 1.2× (showers) to 3× or more (extreme growers). The mean is around 1.4–1.5× — but individual variation is huge. Your flaccid size is a bad estimator of where you'll land erect.
Why It Doesn't Really Matter Either Way
Here's the kicker: partners basically don't notice or care whether you're a grower or a shower. They see you erect. Flaccid state is aesthetic at best — some people have a preference, most don't — and irrelevant to the actual mechanics of sex. If you're a dramatic grower whose flaccid state is unimpressive, nothing about your actual sexual experience changes.
And if you're a shower who looks the same soft as hard, that's also fine. The anxiety around "what I look like in the locker room" is social anxiety, not sexual anxiety. They're different things. Partners see the erect version. That's the number that matters, and that number has nothing to do with what Tim from swim practice glanced at in 2017.
🧠 The comparison trap
The two places men reliably form their mental size comparison — locker rooms (flaccid, often cold-state) and porn (erect, professionally selected performers) — are both statistically useless as baselines. Locker rooms undercount you if you're a grower; porn overcounts the average by showing the top 1% of the distribution. Neither is a fair mirror. The real data on average sizes is.
So What Should You Actually Compare To?
If you want to know where you stand, there's exactly one meaningful number: your bone-pressed erect length, measured from the pubic bone (pressing the ruler in past the fat pad) along the top of the shaft to the tip of the glans. Compare that to the Veale 2015 global mean of 5.16 inches erect.
Do not compare:
- Your flaccid size to another guy's flaccid size (temperature/mood/stress all different)
- Your flaccid size to their erect size (different measurements entirely)
- Your erect size to a porn performer's erect size (selected sample, extreme outlier)
- Your erect size viewed from above (see the foreshortening article)
🎯 If you're a grower: the locker room is lying about your actual size. The guy you think is way bigger than you flaccid may well be the same or smaller than you erect. The only way to know is measurements — and in practice, nobody's comparing erect measurements in real life, so this is mostly a reason to stop panicking, not a reason to go measuring strangers.
A Note for Younger Guys
If you're in your teens and worried because you've seen older guys in changing rooms who seem huge compared to you: keep in mind that puberty isn't done for most men until the late teens or early twenties (see our growth timeline article), AND flaccid-to-erect ratios can shift during puberty, AND the comparison is apples-to-oranges to begin with. Whatever version of yourself you're panicking about, it's not the final version. And the final version is almost always somewhere in the normal range, regardless of what your flaccid state looks like right now.
Bottom Line
Flaccid length is a lousy predictor of erect length. Some men barely grow; some men triple in size. Temperature, stress, exercise, and time of day all swing flaccid measurements around by inches. Locker room comparisons are measuring the wrong thing in the worst possible conditions, and they're the single most common source of size anxiety in men who are actually totally normal-sized erect. The number that matters is the one you measure erect with a ruler. The number that doesn't matter is the one Tim glanced at by the swim lockers.