Yes, it's the perenium.

Deep throat is really difficult. Sometimes, just sometimes, I manage to relax my throat enough to get past the gagging reflex. It is great when I do - my man's reaction is fantastic, and I really love the feel of getting the whole thing in there, right down so my nose is buried in his curlies. It depends a lot on whether I am free to choose my own angle and position - there are a lot of angles where it is just never going to work. And even when it's at the right angle, you just can't always manage to relax and do it. Well, I can't, anyway.

You have to learn you partner's prefernces - some men can't stand teeth at all. But try it - mostly, he'll like it! (whatever it is. Except hard biting. Don't do that unless you know he likes pain...)