Someone who displays the characteristics of being a mute, but are fully capable of talking, they just dont because they:
1. are shy
2. have nothing to say
3. hate everyone around them and are slowly plotting their peer's destruction
Dude 1: hey kid wassup?
Dude 1: What, are you mute?
Dude 2: Yea, he's 'mute'
Dude 1: Really? He cant talk?
Dude 2: I said he's 'mute', not mute.
Dude 1: ... wuh?
Dude 2: Y'know, 'mu-, wait, i'll just text you it.
Dude 1 (receives text): OH