(verb) When someone, especially on online fighting games, scores a very skilled and awesome-looking kill.
Prawned = beaten majorly and awesomely
Slaughtered = killed
Prawnslaughtered = killed majorly and awesomely
Bob: ZOMFG!!!!one!eleven! T3h n00bz0r just tried to pwn me with a rocket launcher! He failzored, and i pwned him with a fucking pistol!!!!!!1!11!!!!!
Douchefrag: LOLZORS u just prawnslaughtered him dude u is t3h 1337 prawnzor!!!!!!!!!