Top Definition
A way of warning people that a retard is present in the vicinity. Can be either verbal or typed. Used primarily on forums when someone says something so incredibly ignorant or stupid, you simply cannot believe it.
Noob: THE GP2X IS BETTER THAN THE PANDORA
forum member: ...The Pandora isn't even out yet......
another member: Oh god, RETARD ALERT!
by DCGM May 31, 2008

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