Top Definition
It's a butt that is is very big and attractive were you wanna hit it. Like in bumper cars you wanna hit the other people.
My boyfriend has a bumper butt
by Gpnfa July 10, 2014

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A game played while on the bus whereby two (or more) people repeatedly touch butts (tap ass, moon landing, etc).
"Wow that was an exhilterating game of bumper butts! I feel like I owe you a drink!"
by gjcourt November 09, 2012

The Urban Dictionary Mug

Lotsa space for your liquids.

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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