teethdrag 

having teeth dragged across your junk during oral intercourse

she gave me the teethdrag so I broke her nose

teethdrag by BCMayhew December 9, 2003

Teeth drag

during a blow job, unusually large teeth drag across penis in an unpleasant fashion

Dude, that girl's teeth drag fucking sucks and hurts/was sharp.

Teeth drag by jdmt January 1, 2012

teethrattler 

doing the missus not doggie fashion, but not missionary... kind of while she's turning over.

'jesus slow down, this is a real teethrattler!'

or 'oh god, you made my teeth actually come out of my mouth' if you are older and still sexually keen. or with some kind of oral disease.

teethrattler by zac pro July 13, 2004