a term originating from forums and text messages in respons to ebscenely long forum posts or texts. means 'too long, didn't read.'
the original use has died out however, and it is now only ever used by
argumentative cunts who have been outargued and
don't want to admit it. as uch, it's current meaning (which would be the corrupted phrase) is 'can't think of an argument, gonna pretend i couldn't be arsed to read it.'
man 1: ...so yeah. learn your stuff, man, you're
making yourself look stupid
man (?) 2: (thinks) shit, that's a
damn good argument! i got nothin'! unless...
(types) tl;dr