Often found in mall food courts, by people who are usually driving pieces of absolute shit, but feel the need to look rich, a.k.a, insane by talking to "themselves" due to the lack of evidence of some kind of phone device.
Hey, who is that guy at Chinese express talking to himself?!
-Seriously, he better have blueteeth or he just escaped from the mental institution.
The other day Sally was caught texting on her blueteeth, too bad she's a retard anyways, this only confirmed the fact.