a somewhat negative term for a person who is socially retarded (not literally), awkward and an outsider in everyday social situations; a pun on 'social pariah'.
"Did you see Dave last night at the party? He has no sense of decorum whatsoever! What a social piranha!"

"Oh no! I'm a social piranha!"

Someone like Larry David in Curb Your Enthusiasm is a social piranha.
by Projekkt December 29, 2009
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it's when a white girl like asian or latino guy's.
what kind of guys does she like ? she is a mudd piranha.
by the man789 February 17, 2009
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When you are so sick of your date that you eat him/her
Marc: Did you hear Sam totally piranha planted Grace last night!
Harry: Piranha planting is so cool
by Piranha Plant August 6, 2014
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A legend and a big bully.This is the type of guy that you wouldn’t want to mess with.If you pic a fight with him he will verbally eat you up.Every woman needs a white piranha in their life.
by Martin berry April 3, 2020
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A giant, humanoid Piranha Plant that usually wears a pair of polka dotted underwear. Debuted in Super Mario Sunshine
Petey Piranha will pwn you, your princess, and your buddy's princess
by C-T-U June 28, 2008
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someone who leaves the markings of a piranha on another's neck. These markings are black and blue, last two weeks and are said to be given out of strong sexual attraction.
Joe gave Ag a piranha neck.
by marshmellows April 9, 2007
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