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1.
1) Any person who attempts a long distance sailing venture who either can not sail or attempts the long distance voyage on an unseaworthy POS(piece of shit). When Reidtards leave the dock, they usually step right into the Green Room at the Darwin Awards.

2) One who makes a blatantly stupid move whilst sailing and/or racing a sailboat.
That guy who built a boat with crap he bought at Home Depot and expects to sail it around the world is a real Reidtard.

The right side of the course was so favored, anyone who went left is Reidtarded.
by Regatta Dog February 17, 2008
 
2.
An individual with the first name Reid who is also considered a retard for his moronic actions and excessive drinking and drug abuse
Do you remember what you did last night? You were a complete Reidtard!
by AKA Hotmeat July 30, 2008
 
3.
A mentaly disfunctional person who thinks it's cool to say the word Butch every five freegan seconds.
Man, can you believe that reidtard.
by Taylor Kato November 13, 2007
 
4.
n. Offensive Slang

Used as a disparaging term for a person with the intellectual capacity of a cabbage.
Person X: "A, B, C, E, F, G, L, 17, Papua New Guinea, B, Q, R, S, T, U, Triangle, Y, Z"

Person Y: "Wtf? You're such a reidtard."
by Reidtard Submission Man December 20, 2005