Four athletic bodies glisten under the harsh gym lights, their breath ragged from exertion and excitement. Two women, one man, and a non-binary partner, they've found a secluded corner for their impromptu foursome. The women, one blonde and one brunette, slip into strap-ons, their cocks straining against the harnesses. The man and non-binary partner, already aroused, eagerly position themselves, one on all fours, the other bent over a weight bench. The women take turns, slapping their cocks against tight asses before pushing in, filling their partners with slow, deliberate thrusts.