Top Definition
A stupid rhetorical phrase used in the 4Kids version of the anime YuGiOh, that makes most anime fans embarrassed to watch it.

"You activated my trap card! A costly mistake!"

Seriously...wtf!? Well, that's what you get for watching an anime about a fraking card game.
Main character plays a card in a ridiculously nonsensical children's card game in which there seems to be no identifiable rules.

Main character: "You've activated my trap card! A costly mistake!"

Minor character is physically injured from the results of said children's card game.
by Eliyon July 11, 2009

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