Loved by most men and many women, the doggy style family of sex positions helps reconnect us with some of our primate roots... The penetration is deep, mobility is generally very high, and the usability is just about unlimited; from a bath room stall, to a nice spot in the woods.
If you find that a significant height separation is causing penetration problems, consider using stairs, pillows, or a foot stall to help account for the difference... and don't forget to give your partner a slap on the tush! (unless of course they wouldn't like that...)
Click on any position to get the full 3D Animated effect.