1 definition by Notrurwords
A girl that always has the same facial expressions, so that people can never tell what she is really thinking or feeling.
A: That chick seems pretty nice. I don't understand her though.
B: No, man, she's a Mona Lisa, you'll never understand her.
B: No, man, she's a Mona Lisa, you'll never understand her.
by Notrurwords November 12, 2011