2 definitions by Doubledome

Top Definition
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.
by Doubledome June 08, 2007
A noob part of a group of noobs that try, but fail to own.
Look at this nooblitar and the rest of his friends get pwned.
by Doubledome May 19, 2007

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