Top Definition
When someone sticks their finger down the crack of their butt and then swipes it across someones nose. Same technique as a wet willy. Pronounced But-twilly.
I gave Ty a buttwilly today after working out, I bet he can still smell it!
by Amazoncountry November 09, 2011

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Physical reaction to a disturbing thought or image. The thought itself makes one physically pucker their ass muscles due to the actual thought.
When I thought I would have to hear Kenny G in concert, I immediately got the butt willies.
by JC Sears March 18, 2005

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.

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