A high level sex move in which the girl is face down on a bed (imperative given the power of the thrust) the man positions himself on the girls buttocks facing her legs, which are held by the man as far up as he or she can handle. The man then penetrates straight down for maximum depth- after that its a matter of thrusting as hard as possible until one or both of the partners bursts into uncontrollable screams. And that is the inverted spider monkey.
Mike did you hear that the interns where doing the inverted spider monkey last night, apparently the screams could be heard for blocks.
by TheOnlyTruth1 July 01, 2010