upper decker

When you take a dump in a toilets tank

Dude: im going to take an upper decker in burger kings toilet.

(Dude upper decks BK)
Later someone takes a piss and flushes toilet: what the!

by mountain high mush September 13, 2014

mountain high mush

When you have someone lay down underneath you, and you squat down and take a dump on there face.

I just gave this jerk a mountain high mush

by mountain high mush September 14, 2014