Usually used about a person that typos a lot...never seem to be able to write anything correct, and when the person notices he writes it wrong, he goes all crazy and threatens to kill everybody else. He thinks he is the smartest man on the internet...
22:54 <+Istar_> i have moustache and bread and pulisongit
22:54 <+Sidious\> Istar_: bread?
22:54 <+Sidious\> :DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
22:54 <+Sidious\> *reps*
22:54 <+Sidious\> haha
22:54 <@lartza> haha
22:54 <+dustie> leipää naamassa
22:54 <+Istar_> meen pois