Top Definition
Watching or listening to something that makes your balls hurt just from thinking about it
Paul - "yesterday I watched this video where some guy shoved a screwdriver up his penis!!"

Don - "dude, shut up, you're giving me a mental vasectomy"
by Ulysses H. Ficus January 31, 2011

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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when you see something that is painful to a guys balls. and it hurts your mind.
did you see that guy get hit in the balls by an armadillo?" "yea.. i had a mental vasectomy
by Whale On A Boat February 12, 2011

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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.

Buy the mug

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