1.The act on a higher level of kicking ass and taking names for professionals who already pwn as high as they possibly can.
2.To take out a very skilled (pwnasaurous rex) and state the fact that you did it in a way where it is to that everyone knows your skills and accomplishments.
1.Mitch: hey man last night I saw your mom doing so guy from down the street
Josh:....(starts to cry)
Mitch: You okay man?
Dave: Nah man he's not okay he was just force fed a helping of pwnafacation he just could not handle.
2. In a game of Halo 3 one may snipe a GM and the GM might get pissed because the other fellow just gave him the pwnafacation he just didnt want.