A person born with 3xthe 21st chromosome, also none as a retard or person with down syndrome aka downer
by Dave C May 07, 2003
Top Definition
A word used to describe Gary's chromozonal makeup. Also refers to a person who exibits characteristics of down-syndrome; especially superhuman strength.
Because of Gary's ability to rip the heads off of small animals while petting them he is trip 21.
by Long One April 19, 2004

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