Top Definition
A person who does not look like a stereotypical nerd/geek/brain.
Prep #1: Like, oh my gah!! Look at the geek in the Led Zep-puh-lin shirt!!!
Prep #2: Isn't he, like, the val-uh...val-uh...smartest one in the class?
Prep #3: Oh, him? He's like, an alternageek, duh!!!
All: EWW!!!
by Alternageek #1 December 29, 2004
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