1 definition by Annastasia Beaverhausen

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 1, 2011
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