Oral Sex

I recently had a conversation with a couple of my male friends about giving females oral sex. They say that they wouldn't mind givng it as long as the girl liked it. Personally, I feel bad that the guy has to go down there because I'm not a big fan of my vagina. And since I'm not a big fan, I get super self conscience when a guy tries to go down there. Giving oral sex to a girl is really an art. Some guys really don't know what they are doing. Through the whole experience it is the girl's responsibility to give directions and let the guy know what feels good and what doesn't. Maybe I don't like the idea of recieving oral sex because society makes it so taboo. Or maybe I really just don't like it because I haven't recieved good oral sex.

Speaking of oral anything in that area, I recently watched a Sex and the City episode where Miranda has sex with a guy, "Marathon Man", and he licks her asshole (tucchis lingus as they refer to it in the show). She's taken by surprise and actually likes it despite that she's never experienced it or has even heard of her friends talk about it. She starts to enjoy it until "Marathon Man" expects her to do it too. I've talked to my guy friends about it and they wouldn't mind licking that area but they don't expect the girl to return the favor. Is that true for all guys?