Monkey Pumper 

one who masturbates; one who jerks off; one who chokes one's chicken; one who strokes one's cork while massaging one's grapes

Employee1: Man, why is the boss such a jerk?!
Employee2: Ah, don't worry dude, he's just busin' your balls cause he's a monkey pumper.

Monkey Pumper by Drjerkle September 22, 2009

monkeyhumper 

another term for any annoying wordemo/word kid.

Ewwww. You listen to Modest Mouse? You stupid monkeyhumper.

monkeyhumper by Action Squirrel April 4, 2003

monkeyhumper 

Monkeyhumpers are from the usually people infected with dysturbedstatic's disease. They have an alarming urge to have anal sex with monkeys. please see also:
queer
homo
buttfucker
and my favorite
rimjob

That monkeyhumper just doesn't know when to quit humping, does he? When they bleed you just have to give up.

monkeyhumper by michaellee33 April 5, 2005