Top Definition
An individual who by all external perceptions appears to be a run of the mill dumb ass, and engages in correspondingly stupid behavior, only to BLOW YOUR FUCKING MIND when you actually see how well they preform in school with minimal effort. The idiot genius, when in a one-on-one conversation in a limited scope seems extremely intelligent, but their activities outside of that context remain in stark contradiction to their apparent intellect.

An Idiot Genius is the Anti-Intellectual Intellectual.
John: Dude, Mike pisses me off so much!

Jim: Why?

John: He does absolutely nothing in school and is a fucking straight A-Student! Then he gets trashed almost every day of the week, smokes his brain to mush, fucks girls like there's no tomorrow, and still manages to do better in school than me! What the FUUUUUCK?

Jim: Lol u mad bro? He's just an Idiot Genius!
by kinkyasianbuttsex November 07, 2011

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One who makes an idiotic decision that results in a brilliant outcome.
You turned a Subaru Impreza STI into an ATV?? That is the most idiot genius thing I've ever seen, you redneck! Make me one!
by the serpx June 12, 2010

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt