Sticky leg

The unanticipated ejaculation produced from a male's penis whilst wearing trousers, normally in the form of tight skinny jeans which then begins to run down one's leg. This is normally produced in nightclubs across the world from grinding on a potential sexual partner for too long.

"Alright mate? why are you heading to the toilet, the club is banging?"

"I've got to go to the toilet and wipe this sticky leg off, I've been grinding with a girl all night!"