Top Definition
1.What happens to people on a very strict diet (especially vegans or anorexics) due to lack of nutrients or calories. Symptoms include stupidity, irrational behavior, and going ape shit without frequent meals of approved food.

2. Why granolas can be so irritating and hard to be around.
Sheila: "What's up with Jenny? She flipped out on me for no reason yesterday, and she keeps acting like Smeegul from Lord of the Rings with that bag of organic trail mix."

Kevin: "I think it's because she went vegan recently."

Sheila: "Oh, I get it. Dietary retardation."
by bowlingforcolumbuncombe December 03, 2010

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