Someone that is so very obsessed with ass, though this is not where the term's meaning comes from. Rather, it is the behavior of these ass monkeys. They act like douchebags for no reason and are typically extremely unintelligent.
John: "Yo, did you go to Mark's party last night? It was wild!"
Rudiger: "Nah mate, I didn't. Mark's a fucking ass monkey."
Rudiger: "Nah mate, I didn't. Mark's a fucking ass monkey."
by Jay Faraday May 23, 2020

A "kiss ass", "brown noser". A person who is trying to impress someone by following them around...closely.
by Anonymous August 26, 2003

in my opinion an ass-monkey has not one but two definitions;
1.someone that follows someone else around and won't leave them alone.
2.a type of flea that hangs around in your arse hair.
1.someone that follows someone else around and won't leave them alone.
2.a type of flea that hangs around in your arse hair.
" i have to go and feed the ass-monkeys that live in my arse with the dried shit that is incrusted in my arse pubes.""
by lee! November 23, 2003

by Queen C April 13, 2006

by penisblackbaby May 8, 2008

by Shelly January 16, 2003
