A question for men about buttsex

The fabulous AAG posted this question from one of her readers on her blog:

What does a man feels inside the ass as compared to the vagina?

It seemed appropriate to post my response here:

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First up, it's a mind thing. Successful buttsex signifies a special bond with your partner on multiple levels.

Next, the external feelings. Pretty much any position you choose brings you into contact with some muscles (thighs, glutes) which are the strongest in your partner's body, vital to their wellbeing, and in constant display and use. In comparison a vagina is tucked away except for those special occasions. Buttsex gives your connection a special robustness.

Internally. The outer inch or so is a snug ring, unlike a vagina (which is more of a slit shape) it grips evenly all round. Further in, it's like a void, almost as though my cock is floating, weightless. If you don't have a cock you can experience this by inserting your thumb into your partner as far as it will go, and pointing it to the base of their spine. Depending on their physiology (and yours) you may experience a cave-like sensation.

In terms of actual thrusting the sensation is probably a bit less than vag sex. Something that gets overlooked is that the foreskin (even on a cut penis) acts as an extra sleeve, so the swing of your hips is not exactly matched by movement where it's tightest. However this reduced sensation is more than made up for by the other sensations I've measured already.

Finally, of course, since both you and your partner possess the same 'playground' it's an opportunity for shared fun which sets aside the usual gender roles.

While your comments are always welcome, in this case AAG deserves them more than I do