1 definition by Mojojoe

A dumbass who makes other ppl dumbasses by spreading his dumbass ideas to them. Another words a dumbass who is called a retard by many is a retarder by making other ppl become as retarded as he/she.
Yo John is such a retarder, he taught 3 year olds how to jack off into microwaves.
by Mojojoe August 10, 2008
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