My wife and I agreed she'd fuck a random guy at a swingers party, no set details. The stud grabbed her, dominating the makeout while I watched. He bent her into doggy and shoved his cock deep in her asshole. She groaned in ecstasy as he pounded, stretching her tight hole in front of me. I froze, aroused, seeing my hot wife anally railed by a stranger. He pulled out and shot thick cum loads over her smooth white ass, marking her. Our cuckold fantasy turned depraved reality.