This is what a teacher wears as underwear, also known as a thong. This would be used when a teacher bends over and the thong can be seen from the back.
Bob: Dawg, ya see that thong ov'a there?
Bill: Na man it aint called a thong, you talkn boutMrs.Andelora's t-floss.
a stupid skank who has no friends. someone who thinks she's queen shit and can't tell the truth. someone who doesn't shave her vag and has crusties around her butthole.
"ohmygod, look at crusty floss' thong, it's got crusty shit on it"