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Medically referred to as polymastia it is the presence of supernumerary (extra) breasts on the human body. The extra breast tissue can appear as everything from a third nipple (the most common condition, referred to as polythelia) to a fully-formed — and fully-functional breast. Lily Allen reveals her third nipple on a u tube interview for all to see.
Hey I had no idea you had an extra nipple, and that pearcing is a real party stopper total triceratits.
by ferret February 11, 2009
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When someone you know has three boobs; this could be anywhere from a woman to a really fat guy and usually should be used as an insult to suckers at work or school.
Stefan: Did you see that new chick with three tits? Total blower!
James: Yeah I did, three boobs she has, Triceratits they call her. Already fucked everyone on the FootBall club, Newspaper Club and Rubik's Cube club.
by SplinterShock May 10, 2018
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