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.
by Garbage Heap August 2, 2020
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Never swing at a woman...Unless you swingin' yo' MONKEY ARM.
by CAPTAIN COCKMEAT May 19, 2011
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A visual display of frustration or disappointment where you hang your head and raise your arms over your head and wave them back and forth in a monkey-like manner.
I could see John was having a bad day on the golf course when he went full Monkey Arms after yet another bad short.
by Jake1675 May 30, 2013
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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<
by dragonmangurl December 3, 2009
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What happens to your arms when you are continually patting yourself on your back...
John had monkey arms after he finished his project.
by scooter133 June 15, 2016
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