This ones going over my head. Help a guy out. What would leave a circle pattern like that?
Nothing, this belongs in badwomensanatomy
Sucking dick
Pretty sure it won't. And that pic isn't showing the back of a throat.
While snopes rates it as "mostly false" there are documented medical cases of dentists noting damage caused by fellatio.
https://www.snopes.com/fact-check/dentist-fellatio/