Activate my trap card 

A quick way or the easy way out of an situation

Teacher: Can you answer this question tom
You : Sleeping*
Teacher: Wake up!!
You: Idk I choose to Activate my trap card

Your friend: *RISES FROM CHAIR*
He's been up all night studying

Activate my trap card by The Mmmm effect July 25, 2014

You just activated my trap card. 

A catch phrase that came from the Yu-Gi-Oh Trading Card game, and is usually said when someone is about to get owned, with complete confidence.

*man 1 gets enraged with fury*
Man 2: Ha, you couldn't beat me even if you tried!
Man 1: You just activated my trap card.

You just activated my trap card. by seanbond5 June 1, 2012

You've activated my trap card 

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.

You've activated my trap card by Eliyon July 11, 2009