Top Definition
The art of shitting into a condom, freezing it, then inserting it into another persons anus during coitus.
Person 1: You'll never guess what I did last night..
Person 2: What was that?
Person 1: I gave the missus a Mars Bar Surprise.
#mars bar surprise #poo #sex #jobby #bum bum
by farmer01631 July 06, 2012
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