Top Definition
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

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt