Now, this one is a little tricky …
To pwn: to wipe the floor with your opposition, usually in a multiplayer PC or next-gen console game.
The legends behind the coining of the term pwn are many, as are the pronunciations (“own” and “pawn” being among the most popular). The story usually involves a typo of the word “own” (referring to dominance in the gaming arena), and this making its way into common usage despite — or perhaps because of — the obvious error.
[Source: Urban Dictionary]