a person who is both stupid, and an idiot at the same time.
jillian forgot to hand in an assignmet to her prof; therefore, she is a sidiot.
by Samanrha September 20, 2005
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A Sidiot is a city idiot. Anyone who lives in or visits a city and acts like an idiot is a sidiot. It used to be spelled C-i-d-i-o-t....but apparently thats taken (those sidiots). It came to be one day while the Arties were Starbucking. They saw an afrofritter then NeeNeeGee exclaimed "Chel, that's an afrofritter not a squirrel! God, you're such an idiot....like a village idiot, except you live in a city not a village, so your a city idiot...actually, a SIDIOT!" and there you have the awesome story of sidiot. Which is much better than thiers. ha
1. Chel was a sidiot when she fell on her face while getting into the backseat of the car.

2. NeeNeeGee was a sidiot when she dropped the board onto her head.

3. Fooky was a sidiot when she crossed the street when cars were coming at her.
by Chel March 20, 2005
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The art of losing a college basketball game that you should truly win by having a huge lead or better talent. Reference Sidney Lowe.

The Sidiot coaching our team cost us any chance of winning after building an 18 point lead.
by Kalamazoot February 8, 2009
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