I believe that "gtfo" is not a word and "choob" is also not a word cock brain.Don't insult others grammar unless you use perfect grammar yourself.
1) "gtfo" and "choob" are computer terms. Just because they aren't in the websters english dictionary doesn't mean they aren't relevant terms.
2) Using those words has NOTHING to do with grammar, that is all about vocabulary.
3) Gtfo pl0x choob. Oh wait, you're not a choob, you're a "newb", but oh wait, newb isn't a word in the dictionary either! Go learn some "grammar" you "cock brain".