As a boy, this was my favorite view -- a row of adult men pissing, I couldn't wait for my cock to get as big and hairy as their's. (The camera position is at the perfect angle for remembering how my 7-year-old self enjoyed discovering the joys of penis watching.)
Open pissing and shitting were common in the mensroom back then.
Most beach shithouses in Southern California were this way and finding dudes on the crapper was common as you looked for an open seat in desperation.
Check out this link from an earlier post: