Top Definition
When you are about to score with someone and you fuck yourself by saying, "I think we should think about this" or "We are rushing into this too fast" Way to go dumbass!
"I cock blocked myself whenever I said that I needed to know her more, now she is fucking my best friend. Lucky bastard."
by Oeltjens January 30, 2010

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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The Urban Dictionary T-Shirt

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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