system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do public toilet seats have a gap in the middle and ones at home don't?
gpt
I know this!

When a man sits on a toilet, the head of his penis often comes in contact with the inside of the toilet seat.  By having a gap, this prevents germs from being transferred from dick to dick. (Ladies never blow your man if hes just taken a crap in a public restroom without the seat notch)

Men also for some reason refuse to lift public toilet seats, so when a man urinates any dribble will hit the bowl, not the seat... in theory.