When the penises of 2 dudes in a threesome with a chick accidentally touch.
Joe: "How was that threesome last night?"
Bill: "It was going really well until me and Bob dongknocked. Then it was just awkward."
Jow: "The chick was hot though right?"
by yumyzombieparts June 09, 2011

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Top Definition
To hit someone quite hard in the penis area, aka the dong.
Did Aegean just get dong knocked?!?!
YES IT WAS AWESOME!!!
by Breydon November 14, 2006

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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