arm-monkey 

An arm-monkey are those "friends" you probably don't really like, but hang out with just to be nice. Usually younger than you. These arm-monkeys think its "super cool" to grab your arm and hang on to it like a monkey hangs onto a branch.

You know you have an arm-monkey because you'll want to cut off your arm everytime the "monkey" comes around and holds onto it.

*Little girl comes and grabs your arm*
You: Uhh, hi?
Girl: Ohh-Ahh-Ahh (monkey noise)
You: Nuuuuuuuuuuuuu!!!!!! I hava ARM-MONKEY!1!!!!!!!! D<

arm-monkey by dragonmangurl December 2, 2009

Monkey Arm 

A well-formed turd that is long enough to wrap around.

She got to the toilet just in time to pinch off a foot-long steaming monkey arm.

Monkey Arm by Garbage Heap August 1, 2020

MONKEY ARM 

A HUGE THICK VEINY COCK

Never swing at a woman...Unless you swingin' yo' MONKEY ARM.

MONKEY ARM by CAPTAIN COCKMEAT June 13, 2011

steamy monkey arm 

A massive shit. One huge solid turn resembling a monkey arm.

God damn dude, I gotta go lay a steamy monkey arm.

steamy monkey arm by Drew Peacock May 13, 2005