To my complete amazement she didn't need any urging, she just fell to her knees and began stroking and sucking his huge black dick. It was the most er...tic thing I'd ever witnessed. She devoured his black cock and massaged his huge cum filled balls with her small white hands. In less then a minute Calvin erupted, shooting stream after stream of his hot sticky seed down my wife's throat as she continued to massage his nuts to milk him for all he was worth.Finally, Calvin collapsed back on his. Playing with each other, while their dates watched, or screwed them from behind. Some experiments with bondage and discipline. With hypnosis, mind control. They both decided they liked that -- a lot. They played little dominance games with each other more and more. Sometimes Cindy was the mistress, sometimes Linda.Then they hit on the idea of "the agreement."For one year, one of them would be the dominant partner, the other the submissive. For a full twelve months, one of them would be. It was too much for her... too depraved... filthy... perverted. "I thought Marina was an exclusive club. I never realized these people were like animals... "Come on. You haven't seen anything. Upstairs in the bedrooms there's probably six or seven couples indulging themselves," he said matter-of-factly.All during this time, Clay had stroked her clitoris affectionately, with feather like strokes of his fingers, and she began to move her buttocks in small circles against his hand, unable to. One hand held her labia open while the other hand's fingers circled her clit. Her eyes looked at me, half-lidded. "It felt so good, Gretta. Your brother has the most amazing cock. It's not the longest one I've ever had, but it's girth…" She moaned. "It's like a wedge, just meant for spreading a pussy open."I brought both feet up on the couch as I rocked my fingers in and out of my slit. My knuckles rubbed past my clit on every pass and I felt as though my heart might leap out of my throat..