Top Definition
When an erection occurs involuntarily in response to an inappropriate stimulus and a conflict between logic and biologic arises resulting in a state of terror, embarrassment or squirmyness.

This condition arises predominantly in situations where the catalyst is vile, repulsive or undesirable and against all better judgement, you get an erection.
A Squirm Boner occurs when:

A nasty trailer trash dance-queen drunk on lady's night well-drinks uses a fist of sausage fingers to grope your junk on the dance floor.

When you realize the sexy asian girl you are fapping to is actually a boy

when your cousin is forced to sit on your lap in the back seat of your dads car while driving on a bumpy road.

When you accidently brush up against a 90 year old woman in a swimming pool.
by eats tribbles October 19, 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