Top Definition
Sex, as in thrusting two hairy, smelly parts of the body into each other till gooey liquids spurt out.
We were bumping nasties all night man, she was looser than my ass after an all you can eat mexican buffet!
by Anonymous May 28, 2003

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1. A synonym for the dancing form commonly known as grinding

2. A male usually standing behind a female as they both move their hips to the beat of degrading music
Everybody at the school dance was bumping nasties when the disc jockey played a sexually explicit song.
by mealsies February 25, 2007

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