Caption for the blind: sometimes when you put your trousers down to pee, a they fold in such a way that there is a large crease blocking the line between your dick and the toilet. Unsuspecting of this you start to pee (this crease is not a regular occurrence), and only end up finding out when it’s too late.
If everyone would sit, it can only go in the bowl. So the route cause is man who stand (and can’t aim)