Someone being a complete dumb ass. Not brite. Says repeated dumb remarks.
Dude why did Bob stick his dick in the fuel tank? Hes a complete knuckle dick.
by rail-a-bitch February 08, 2009

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Top Definition
someone who gets cockpunched all the time
Andrew Baker is so well hated that he became a knuckledick.
by DLa November 15, 2003

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The Urban Dictionary Mug

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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).

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Someone who gets cockpunched all the time.
He walks funny because he is a knuckle-dick.
by Monkey D November 16, 2003

The Urban Dictionary Mug

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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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).

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A penis that has "popped" or made a popping sound similar to knuckles popping after being thrusted in too hard, resulting in a bent penis and pain
Dude the other night I was with my girl and went too hard and got a knuckle dick.
by Dr. F the mad scientist December 22, 2015

The Urban Dictionary Mug

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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.

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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