Top Definition
A sexual position where a man suspends a woman, who spreads her arms and legs straight out, by holding on to her arms and suspending her legs with his own. While suspended, the man then proceeds to perform anal sex on the woman by raising and lowering the woman with his arms and legs. This is one of the most tiresome and difficult sexual positions known to man. To perform, one must have a large muscle mass.
Bro, those months at the gym finally payed off. Me and my girlfriend tried out the Buoyant Pendulum last night and I kept it going for seven minutes!
by justanothervictimoftheghetto April 18, 2010

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