Short hand for: What The Fuck Laughing My Ass Off Laugh Out Loud Oh My God Shut The Fuck Up Rolling Over From Laughter Age Sex Location Do What I Mean Not What I Say Ok Thanks Goodbye Talk To You Later Die!
As you can see it is quite useful. Yet only noobs and losers use it.
Mac fagot : I like monkeys
Normal person : Man you are crazy, whats wrong with you?
Mac Fagot : Monkeys say wtf all the time Noral : Ok, you are insane you cultist fool wtfmonkey just makes no sense