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1) Conjunction of "giant retard", more stupid then your average retard. An IQ of less then 42, usually a giatard has buck teeth.

2) Conjunction of "giant leotard", a leotard so big, only a giapotamus or larger (if possible) can wear one.

Jeremiah must a giatard for going out with that bitch!
by JerLuvsDiane September 01, 2006
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