Top Definition
A game where one male player exposes a small area of skin from their genitals to the other player. Then, the other player has to guess whether what they have been shown is cock or ball. Ricky Gervais is believed to be the founder.
Guy: Wanna play offal jim jam?

Girlfriend: Sure!

Guy: <opens fly> So what do you think?

Girlfriend: Cock?

Guy: You're right! Here's your prize.
by shteyngart September 22, 2009

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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

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