Is it normal that i chipped my teeth peeking at a girl's pussy

I was in an adult store movie booth when this guy sent his chic into the next booth to try on some crotchless panties he bought for her. Well they have these glory holes so pervs can stick their dick on and get a blowjob and I looked in and got a great view of her cunt. She was shaved smooth and had little girl lips. I clenched my teeth so hard that I chipped 3 lower ones.