gtgkma

stands for "gotta go kill myself again" . It is something you say online when you've been hurt.. again and wish to end the conversation.. with an excuse that you won't be doing anything else, just rotting and feelin crappy.

dude: You are a poo.
kid: o.. o my.
dude: ya.. ok whatever. you suck poo. why am i even talking to you..
Kid: ya.. ok. gtgkma