Synonymous to phoneballs, teleballs enable one to say things telephonically, that is, over the phone, that they would not normally be capable of saying when face-to-face.
"Dude, last night, I totally told Karen that she's a douche bag."
"Yeah, but Robbie, let's face it. You're like every other 'obbie' out there, you just grew a pair of teleballs. And dude, you smell like piss."