Top Definition
When your girlfriend gets spunk all over her knuckles after wanking you off and threatens you in a comical manner with the "spunk knuckle duster".
Girlfriend to boyfriend after wanking him off *she brandishes fist* "I'll punch your face in with my spunk knuckle duster you minger!"
by Freakosaurus April 08, 2011

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

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

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The Urban Dictionary T-Shirt

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