I never use internet lingo outside...well if lingo like "brb", "fml", "omg" and things like that count...then I do. but I never use ATRL lingo outside, I'd be freaked out if I did
I only use "I'm not here for that" (which isn't necessary to explain in many contexts), "Why you mad tho?" and "You will deal," as far as I can remember. There are probably others that slip out every once in a while, though...
Oh yeah, I also use "Ch...," but I've been using that since before I started seeing it on ATRL.
Omg, ever since I've joined ATRL, I've been saying ATRL lingo in real life. Most of my friends find it hilarious though, and they never question what half of it means, so they either know/understand it, or just don't care enough to ask.