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