It (kinda) happens to everyone. Say men supposed to cum whenever they prefer to. In these scenes, men's primary control over ejaculation being momentarily hijacked by their overwhelmed excitement. Sometimes somehow the cock of a horse hung just busts on set without an alarming note, other times it only takes a super sensitive, loser dick to shoot after countable thrusts. It is hot to see a guy cumming prematurely, especially in BTS from studio productions, something with how spontaneous it is.
It is definitely a major arousal, possibly a new fetish that you won't realise till you watched it. This compilation collects involuntary loads from both amateur works and studio porn feature jerking off, oral, topping, btming and fleshlight fcking... Cum see men cum in absurd ways.