Top Definition
compared to superman's kryptonite, its a females demeanor or attitude that they use to seduce or conquer men
Chris: Did your punk ass get back together with your ex girlfriend kathy last night?

Mike: Man, she threw that whiptonite on me and i was done...

Another Example:

Mike: Man, i think im in love with Kathy and its only been two weeks...

Chris: that whiptonite never fails on you mike
by Chris Kenon June 10, 2008
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