Take-Home-to-Meet-the-Parents Smile
kbdabear's links - sometimes they look unpleasantly pouty ... once one gets around to noticing the face.
2nd link, 2nd girl, the one with the green flannel plaid top?
https://twitter.com/kbdabear/status/731150163117543424
A real take-home-to-meet-the-parents smile. (Not necessarily dressed like that, though.)
Wait, is that a tramp stamp?
Never mind.
Maybe it's just a bad bruise. Or a birthmark.