The act of defecating in the uppertank of the toilet. When the nextpoor unsuspecting person flushes the toilet they get a bowl of beef stew. the upper decker is a weapon of terror and should only be used on people who deserve it.
My friends x-girl friend had a party and she left whith some other dude who looked like the fonz "Heyyy!". So I took it upon myself to leave her an upper decker
Hey man this place is so wack everyone has like a real job! I will show them lets cram our 5 member band into a studio apt in Queen village and keep living this failed dream. positive balanced bank accounts are for suckers!