1 definition by nokyo-chan

Top Definition
Adjetive: Describes an amazing comeback.

Verb: The act of owning someone.
1. Dude, that comeback was totally keifer.
2. Man, when you said "shut up"...couldn't you have thought of something more keifer than that??

3. You totally keifered that guy in the face!
by nokyo-chan April 13, 2009

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