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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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A trick where a person tells you ,"Say tuna sub backwards!". Being the retard that you are you will scream "BUS ANUT" (Translated: BUST A NUT), and everyone will start laughing at you and not with you.
Badass:Bruh say Tuna sub backwards
via giphy
by 1337 Meme L0rd 69 June 05, 2018
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Before climax, pull out and tuck your dick under your butt and blow your load
Person1: bro allison totally let me give her a tuna sub last night in bed
Person2: isnt that where before climax, you pull out and blow your load from under your ass?
Person1: yea bro
by Ewokin_on_em June 09, 2018
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