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2 definitions by James Carmel

Metaphorical article of clothing, the invocation of which indicates the "wearer" is exhibiting spectacularly bad judgement. Inspired by the 1990 "Saturday Night Live" sketch of the same name.
"You left your bike outside last night without locking it up? Those Bad Idea Jeans look great on you."

"I can't believe I went home with Butch last night. That's what I get for wearing Bad Idea Jeans."

by James Carmel April 17, 2006
A principle which dictates that in any given group of people, the most attractive person will be regarded as extremely hot, irregardless of that person's actual attractiveness.

The effect is most often seen with groups of "less than" to "not-at-all" attractive people.
"Damn, Lucy is looking fine!"
"No way, man, look around -- Xander Effect."
by James Carmel April 20, 2006