Top Definition
v. to continue sexual relations with multiple partners simultaneously, a la Tiger Woods.
Man, Tiger was multi-assing all those bitches!
by Staypuft75 December 15, 2009

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To be doing more than one ass at once.
"dude last night i got so much ass at once"

"so you were multiassing?!"

"pretty much!"
by Falalala. January 02, 2010

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.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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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