A very mysterious form of martial arts where the weapon of choice is time.
Lu Tze, grand master of Deja-Fu, has already kicked your butt. Don't you remember challenging him?
by Shrikey March 23, 2004
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The feeling you've been kicked in the head like this before.
People who have faced Shawn Michaels more than once in the squared circle often feel deja-fu.
by The Other Josh Cohen September 12, 2005
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(n.) A fictional martial art that can only be described as the feeling that one has been kicked in the head this way before.

(v.) Getting your ass kicked a second time by the same person.
Don't screw with that monk, he knows Deja Fu.

I was hitting on that bikers woman again so I got deja fu'd.
by The Malc-Man April 13, 2006
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