Yin Bang
A gay male sexual position in which it is possible that both mens penis's are able to penitrate the other's anus. Man (a) lays on his shoulders and elbows while supporting his buttocks in the air with his hands. Man (b) squats above man (a) and bends forward at the waist, thus making it possible for both penis's to enter both anii.
"Man, mine and my gay lover's asses were bloody after we performed the Yin Bang on each other last night at church."