Though we can think of several hundred kinky things to do with a calf-raise machine, our vote for most sexual piece of fitness equipment is a large Swiss ball. Why? The ball can actually help improve your depth of penetration, if you're in the right position. Try this: Sit on the ball and have her straddle you, facing forward. Hold her hips for balance, and use the rocking motion of the ball to thrust in and out of her from behind. Do one set of at least 50 repetitions. Be courteous: Wipe your sweat off the ball when you finish your set.
Posted by: irontime
We actually tried using one of those once, not bad, but it's kinda hard to keep balance.
