Originally Posted by healer

I agree with most of the previous posters. Bartering with sex is just not a good idea. However, I can see how a partner might feel obligated to return the favour.

Since we're talking about anal, here's a quick scenario. Guy wants to have anal sex with girl, but she's unsure. Through some discussion and research, she decides to try it since he told her it'll feel great for the both of them and she's read about the great anal sex the girls in the Ladies Lounge are having. After doing it, she tells him that she'd like to fuck him with a strap-on, citing more of the "I hear lots of guys enjoy it and could be fun" etc.

Would it be fair if he just said no? Probably not.