Top Definition
Similar to a prenup, where a contract is made before the sexual encounter to ensure zero emotional liability, zero stalking, zero kiss-and-tell and zero phone calls the morning after, or alternatively STD-treatment bill and abortion bill insurance.
Dips: I don't want to be any girl's first or last. That's just too much baggage.

Bhai: You're just scared! I'll tell you what, sign a prefuck. That way you can be sure she won't stalk you afterwards.
by dropdedman April 12, 2010
1 more definition
You and a significant other arrange to meet before a date and engage in vigorous sex before you both get too drunk or something. Also is a great way to break the ice.
Guy 1 - Dude I am getting bombed at the bars tonight.
Guy 2 - Aren't you going with Jordan, what if you get whiskey dick?
Guy 1 - It's okay, we are going to Prefuck at her place.
by OSU JTG May 28, 2009

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