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A mysterious mammal species that often appears in the middle of terrible jokes.
"Dude I saw an interrupting cow yesterday!"
"What's a-"
"Mooooooooooo!"
by Ninjagirl22 July 24, 2017
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2
1) The central element to a well-known 'knock knock' joke.

2) A surprisingly common sexual practise where the participants will continually interrupt each others moans/groans/constructive criticisms with loud mooing noises. Can be used to either 'spice up' a flagging love life or cause laughter in the bedroom (the good kind).
1) 'knock knock'

'Who's there?'

'Interrupting cows'

'Interrupting cows w*MOOO*ho?'

'Git'

2) 'You like that ba*MOOO*'by?

'Oh y*MOOO*eah*'

'You know this would be bet*MOOO*ter if you sto*MOOO*pped mooing!
by The Irritable Raccoon July 31, 2011
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