10 Impossible Sex Positions (NSFWish)
The Triple Lindy
He holds you in the air, from behind, while you balance on his penis.
Why It's Impossible: The people on "Dancing With The Stars" can barely do this, and they don't even have their genitals involved. Chances are about 100 percent that your grip is going to slip, you are going to do a face plant and fracture his penis in the process.