To get revenge for something that you know that another is going to do to you.

Also known as: "Doing unto others before they do unto you", preemptive self-defense. While preemptive self-defense indicates one striking another do to a large threat from the other, preemptive revenge indicates striking another if they even think of doing something to you, no matter how large or small the threat is.
"I've heard that that guy who's always threating to beat you up is on crutches.."
"Really? Time for some preemptive revenge.."
by KonekoKeita February 20, 2008
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