2 definitions by Doubledome
by Doubledome May 20, 2007
To fail instantly by your own words when you try to comeback in an argument. (Combined from the words Instant and Fail.)
Bill: Joe, I still think that Cartoon Network has the best Cartoons.
Joe: Say what? Theres Nick, Disney, PBS Kids......
Bill: You watch PBS Kids?! Insta-fail.
Joe: Say what? Theres Nick, Disney, PBS Kids......
Bill: You watch PBS Kids?! Insta-fail.
by Doubledome June 8, 2007