Thong sex?

Not preferred, but easier sometimes. Like when your out in public or semi-public places, behind a car or in a bathroom. Lift skirt, and slide to the side. But not really in at home, when there is time to take them off it's more sensual to not have them on.

I wouldn't think to do that. In my mind sex = underwear off. I guess it'd work okay though.

I wouldn't say it's preferred, but probably not minded (from the girl's point of view, at least).

if you are in a public place

Personally I am wondering what she is feeling when she is doing this like it seems to me that she was just kind of trying to make a point that she wanted it to be over fast in what I am reading. I mean I am totally seeing a freak in the streets with that talent but as far as the bedroom I'm sorry if we're having sex in bed you can keep your bra on if your self conscious about your breasts but under wear off is a definite for me when it comes to sex.