Top Definition
When you do something amazing that would normally take more than 4-5 people.
In Modern Warfare 2:

Guy 1: "Hey you just killed the entire enemy team in Ground War!"

Guy 2: "I know, I'm a one man gangbang!"
by DoctorGoodWood May 27, 2010

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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When one man has anal, vaginal, and oral sex with one woman during one session, in any order. Also known as the trisexta.
Will: Want to go the bar tonight?
Bill: Not before 11, I am going to one man gang bang my girl in a bit.
by DrSussy October 07, 2009

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