A phrase used before some kind spam; dramatic moment; or harm.
Example 1

Person 1: I'll be sending my entire photo album and crash your computer, PREAPUR UR BUTS!
Person 2: Oh gawd! Heck no!

Example 2

A: I'll be showing you my terrible ice-skating skills, PREAPUR UR BUTS!
B: Uh-oh...
by Wha-daCAG February 21, 2016
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