Top Definition
Bus a nut spelled backwards. A clever discreet way to describe ejaculating in or around a womans mouth/vaginal region.
All I remember was after she came out of the room, she wasnt hungry. She told me she got a tuna sub from Christian.
by NOVIAN August 09, 2009

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Tunasub was created by some filthy minds on the twitterverse as an allusion to masturbation. Backwards it spells bus a nut. Used as an incognito way to announce that one has or has the intentions of masturbating.
After a long day, I like to come home, shower and tunasub.
by Annastasia Beaverhausen November 01, 2011

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The Urban Dictionary T-Shirt

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It means bust a nut. Bust a nut means ejaculate.
Hey dude, spell tuna sub backwards. HEEE HEE HEE
by Catlolax March 14, 2016

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The Urban Dictionary Mug

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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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a sub from subway or a girl with a smelly vagina.
dame you smell girl or tuna subs are delicious.
by Tanner doll February 16, 2009

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.

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