1. To aggressively perform anal sex, as if one owned, or pwnd, the butt involved.
2. To express domination in a non-sexual field in this manner, whether or not actual penetration occurs; an augmented form of pwn. To pwn completely or utterly.

Pronounced 'buttpown'. Also, "asspwn" or "pwn butt".
1. I'd totally buttpwn someone if they brought me a pizza right about now.
2. With a sniper rifle and a thermal scope I can buttpwn the whole other team.
by hhcftw January 04, 2011

1 Word Related to butt-pwn

1.(v)- to pwn in the ass. To completely pwn
that guy butt-pwned me at Halo
by Damoclese July 22, 2004

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