The act of providing a rebuttal before the opponent has actually said anything.
"I knew he was going to say that so I gave my prebuttal right away."
by Alexandradagreat January 24, 2012
Prebuttal: N -Whiny address from Gore-Loserdemocrats, intended to refute the Presidents SOTU (state of the union) speech before he has even had a chance to deliver it.
Dang! That Nancy Pelosi is some kind of alien-freak-job, she never blinked once while giving that prebuttal speech last night.
by Spin February 08, 2005