Siberian Bobsled 

When a man has sex with a woman at the top of a stairway "doggy style," he has her facing the stairs and holding onto the top step. When about to about to come to climax, the man kicks out the woman's arms out from under her and rides her down the stairs bobsled style. The vibrations from the stairs cause an unparalleled orgasmic experience.

Warning: this sex act may cause damage to said woman's face.

Bill: I rode Kathy down the stairs last night Siberian bobsled style.

John: You probably won't need sex for another month

Fred: good thing Kathy's face was already busted, it would have been a shame to do that to Amy

Siberian Bobsled by febuaryX July 4, 2009