Top Definition
Similar to a turtle head, a boat knob is a small piece of poo, that has emerged from the anus, while the rest of said poo is still submerged inside the rectum.
Bogan 1: Oi where's the dunny cunt I got a boat knob hangin out.
Bogan 2: Down the hall and to the right you filthy cunt.
by Crumbed Cutlets March 31, 2016

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Having a sex party on a boat.
My friends are having a boat knob, you in?
by Windwing August 02, 2016

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The Urban Dictionary T-Shirt

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a long curved erect penis.
"Hey Reece Nichols people say you have a boat knob"

"Oh fuck she said she liked it :("
by Hazertron12 March 29, 2016

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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.

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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