There certainly are in Europe. A walk along the Corniche in Marseilles or in some public parks in Germany is an education in the prudery of Americans.
I don’t think I’ve ever really had this issue since I was maybe a teenager. Certainly, nearing 50, I have no issue keeping him down if I want him down. Unless I’m thinking naughty thoughts or someone I desire is touching it, it’d be no different than rubbing lotion on my arms.
I believe you must be unique. Most men don’t get erections from just touching their penis.
Surely there’s some way of expressing the idea “I don’t worry about erection embarrassment at nude beaches because I’m not sexually attracted to most of the people I see there” without body-shaming other nude-beach users, to the extent of calling them “horrors”. Revolutionary as the idea may seem, people are entitled to be publicly nude while not conventionally attractive, in places where public nudity is permitted.
Strangers on a public beach don’t have some kind of duty to facilitate your arousal response during marital sex by providing you with visual memories that you find erotically appealing. If the visual memory of seeing unattractive people naked interferes with your sexual functioning in your private life, that’s your problem, not theirs, and they shouldn’t be mocked or shamed for it.
Yeah, this may come as news to the OP and some of the lady posters here, but men do not walk around with a chub, nor do we go “schwing” every time something touches our equipment, or when we see an attractive person. We’d never get anything done if that were the case. Believe it or not, it does take some effort and focus to get things in order for, uh, proper action - it is not usually accomplished via casual interaction.
The nude beach i wandered into on Martha’s vineyard is a family beach. Most of the people there were old, but i saw a mother encouraging her young daughter to swim, both of them unclothed. And i had my young kids with me, and no one looked at them funny.
The nudity on the beach wasn’t about sex. I’m sure various participants had various reasons, but i didn’t see anyone who looked like they were gawking, making out, or otherwise treating the beach as a sexy place.
I can just imagine the poor lonely little guy tryin’ to catch a lift back to town. 
We were on a beach (Isle Pinel) on the French side of St Martin. I was under the shade of our umbrella, while my gf had shed her top and was in the sun toasting.
Two American couples (loud, obnoxious) were next to us. The men were trying to convince their wives to take off their tops, since they were on vacation and nobody knew them. The one guy waved his hand toward my gf and said, “relax like these French babes”.
My gf replied, “French? We’re from fucking Pittsburgh, you don’t get less French than Pittsburgh”.
They became embarrassed Americans (less loud and obnoxious).
I think I just fell in love with your gf!
I was only on a nude beach in the SF Bay Area once. I think it was on the SF side, but I was staying with friends in Marin, so it could have been either. No big deal at all.
I’ve also been several times to the hot springs in Saline Valley (between Owens and Death Valleys). Everybody is naked almost all the time, and after a surprisingly short time you don’t even notice it at all.
The idiot I was traveling with in Marseilles was taking pictures of the nude women. It was NOT appreciated by them (and not by me to be included as an ugly 'Murkin with him). There was nudity in public parks in Germany; usually men on their lunch hour getting some rays. Way TMI in most cases.
Our local nude beach here in Miami Haulover Nude Beach, Florida is a section of a larger public beach / park: Haulover Park - Miami-Dade County
When I’ve gone it seems to have spontaneously socially divided into the gay men’s zone and the everybody else zone, about 50/50 by beach frontage length.
Lotta the gay guys are youngish, buff, and obviously attentive to their well-tanned appearance. The everybody else zone is much more ordinary middle aged Joes & Janes. Plus a small contingent of young women mostly alone who’re displaying very even all-over tans too.
It really does. Remarkably different than any sort of suit, be it baggy or snug.
In all, IMO a pleasant way to pass an afternoon. It’s enough of a drive from home for me to not be a practical regular experience. But if I’m already down in Miami for another reason then it’s a nice stop on the way home if the time of day is right.
Well, it seems GF’s french is pretty fluent. 
I hope she has (or can affect) a real thick working-class Pittsburgh accent to deliver her put-down.
Color me another person simply baffled by the OP. Both the words and the thinking behind them. But it did give us all a chance to talk about nudity and beaches, so that’s good. 
Maybe Asuka is 14? I feel like most of my male friends have stories about embarrassing erections in middle school.
He (presumably he) joined 8 years ago. If our min age is IIRC 15, he’s gotta be at least 23 now.
If they’re a she of whatever age who has zero experience with male anatomy that might make more sense.
All I know is that you’ll need maximum sun protection, so you should use this:
Awww, what a trip down memory lane, I remember when their neon colors were ALL the rage on your nose DECADES ago; like everything else fashionable, overnight they became lame. Good to know they’re still around. Don’t know that I’ll be buying any but still happy to see it.
You have to admit it would be hilarious if someone used that stuff…elsewhere… on a nude beach.
I am reminded in “Tales from the Vulgar Unicorn” it was mentioned that in painting the sign for the eponymous tavern the signmaker used colors that left no doubt it was a male unicorn.
Other than when I first got erections during puberty, it typically takes more than just some touching to get anything going. I would say just slather it on.
I personally would never go to a nude beach though. I don’t desire to see other people naked and I absolutely don’t want to be naked around other people. Always tried to avoid those kinds of situations as much as possible growing up. I feel like younger people in general don’t tend to feel comfortable naked in public places. Always seems to be more of an older generation thing, like a bunch of old men hanging out naked in a steam room.
I’ll say straight up I ain’t doin’ it.
I’m skinny. Probably too skinny.
Too many scars and attached devices. Me and the sun are not friends. Until they get SPF 1000, I suppose I’m stuck in the shade and covered.
I can’t think of anything more unpleasant than being on a nice beach and being covered by sun screening cloth and everyone else having a toot of a time, partying it up.
Y’all have fun and think of me out there.