In this position, the receiving partner gets down on his hands and feet (not knees) and sticks ass into air with his knees bent. Penetrating partner inserts penis into receiving partner's ass and then leans chest down over the back of the receiving partner, wrapping one arm around receiving partner's chest and grabbing the receiving partner's penis with the other hand. The receiving partner then straightens knees and lifts ass into air while the penetrating partner still inside is lifted up as well. Performed best if penetrating partner can wrap left leg around left leg of receiving partner, and similarly with the right leg -- in this way the receiving partner is completely holding up the weight of the penetrating partner and can buck around like a horse while the penetrating partner masturbates the receiving partner.