Top Definition
A small piece of cotton from your boxer shorts that becomes tangled in your sweaty arse hairs and swings around like a monkey in the jungle. Usually found after sport or other strenuous activities. The cheeky buggers often interfere with arse wiping after ones shit.
Thommo had found some mean cotton monkeys when he wiped his arse.
by Tom Purcell April 27, 2005

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