I was at a party once a few years ago, hanging out with some girl friends, when the conversation turned to sex. One of the girls was kinda drunk and talking about her boyfriend. At one point, she got up and pretended to, well, pull her butt-cheeks apart and said, "If you can't walk around in front of a guy like this, then you shouldn't be having sex with him!" (Note: she was clothed, but nakedness was implied.)
Ok, first of all, I like the idea of this statement. I think a lot of people do sleep with someone just because they think they're supposed to (especially in high school and college.) At a time when so many women (and men) are unsure of themselves, so many just throw off their clothes and start bumping uglies. Even past then, it's the "Lights Off" problem of wanting to have sex with someone, but not wanting them to see you naked. That's not good. You should feel comfortable enough with someone to be seen in your birthday suit, however different it is than you want it to be.
Second of all, OH MY GOSH, I totally disagree with her statement. I'm kind of old school of not even wanting a boyfriend to see (or hear) me use the restroom* so there is no way in hell I'm going to walk around as my friend had simulated. I think there is a definite middle ground between my first and second points. Maybe it's because I really don't want to see some guy go all Jim Carrey with his own ass-crack...
*I won't even say "pee"!