Sunstache
A mustache that you get from sunburn or tanning by not using sunscreen. Happens to many people and looks oddly disturbing on females.
My sister has a Sunstache from getting sunburns at the beach. We tell her to put sunscreen on, but she wouldn't listen, and she was shit out of luck.
reverse sunstache
When you have a moustache and get sunburn but then shave it off, leaving paler skin on the upper lip. Opposite of a sunstache.
Look at that faggot's reverse sunstache.