A person who has so much metal (braces, retainer, etc.) in his or her mouth, that they are seen to have a "swiss army mouth".
Man #1: Hey, did you see that waitress? She's got huge cans!
Man #2: Yeah, but she's clearly underage, the swiss army mouth gives it away.
Man #2: Yeah, but she's clearly underage, the swiss army mouth gives it away.
by Alyoyo August 09, 2011