Cuz they are not too stronk
It's like saying pwn instead of own, internet slang.
Same thing with "ganG" and "ganK". I guess some people want to be gangbanged or something...
This actually came from Dota forums,it originated there long time ago,and tbh i don't remember when.
© 2014 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.