Top Definition
The act of cock-blocking oneself by saying something extremely stupid. When you don't need a cock-blocker - when you can do it all by yourself.
Danny was being hit on by some hot chicks at the bar but he said something so stupid he actually auto cock-blocked himself.
by Oscar12345 August 17, 2008

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When you say something to the girl you are hitting on that makes you loose any chance of having sex with her.
Namyr can't get a girl because he's always doing autocockblocks.
by Francisco Garcia Gonzalez October 10, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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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.

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.

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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