Top Definition
Something that is so uncool, that it becomes cool. It can only become retrocool in a group when the majority of the group excluding the dumbasses can agree that whatever wasn't cool is now officially cool.
Susie: Your shirt is pink dude, that's lame.
Billy: Man the shirt sucks so bad, where can I get one? It's cool.
by Michaelinator November 01, 2004
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