Sex of the anal type.

[princealbertofb]

Sil is right, there is a ton of information. Look around, you'll find it. I would really recommend trying out some toys first with lubricant and all, just to see how comfortable or uncomfortable you feel with something in your anus. It is true though that a real penis, with its texture and warmth is probably more enjoyable than a toy, which can be cold and a bit hard, I suppose. Don't forget to ask him to "wrap it up".