Top Definition
The foamy build up beneath the foreskin of a nasty penis, usually during intercourse or masturbation. Really gross if left to ferment too long.
She thought twice about giving him head when she saw and caught a whiff of his neck butter.
by Davefpsycho January 05, 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

Your favorite word on a white 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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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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

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