I began sliding gently in and out of Sam's upturned rump, with my hands softly holding her waist. She was eager already - she rocked back slighly to meet me at each thrust.
Tracy just watched us move together, my shaft disappearing and reappearing from Sam's tightly circled ring, "Crikey, this is hot."
"Trace?" Sam called, "Why don't you come up with me so I can do something nice for you too? You can keep watching Hero do me, I promise."
Tracy was torn between the offer of sex and her first row seat to sodomy. Sex won out but barely. Her eyes never left Sam's ass as she moved...