I'll never forget my first time with a girlfriend. It felt so taboo that I didn't last long at all. What surprised us both was that a woman can have an orgasm through anal
My wife put her ass up and buried her face in a pillow when she gave me the special treat of her ass. She didn't want me to see the tears, but the whimpers (and the little yelp at the pop) were a huge turn-on! I never lasted more than a few strokes.