As I worked on his penis, I became very aware of all the water filling my inside. It was strange, really needing to go to the bathroom and not being a...le to. Marcus was obviously becoming more excited. He pulled on me hair and pressed me hard against him and started pumping in and out, evidently enjoying much the feeling of my teeth against his dick, and my tongue fondling his glans. Suddenly he came (and I swallowed his cum). We stood embracing each other for a while, and feeling his musculous. ” “Why, is something wrong?” “No…just that Jane needs help with that thing.” “What?” James asked, as I bit my lip, knowing that my reply had been terrible. “Uhm…” “Listen, Rachel, I have no idea why you want to go but the project is due in a week and we have no time to waste. So you get your sexy ass into the lab so I can get it done with you.” I couldn’t help but giggle at the sexual puns on those words. But regardless, I nodded my head and followed him into the lab, switching on the lights.. They did it so well. They had looked in on the spa the first day they were there. It was very plush and the rooms were very private. The masseurs were all very fit young men. The masseuses were all sexy young women. Ambrose and Em had exchanged raised eyebrows about this. Each had already begun planning a little event. Evidently, Em’s was to be today. Ambrose thought it would be nice not to compromise that situation, or complicate it, by being around in the spa at the same time as Em. He. Moving my cock in and out of her mouth feeling the delicious warmth of her orifice bringing me towards an orgasm.The thought that either of my parents or Rita could show up at any moment to see my step grandmother on her knees blowing me made my arousal that much more intense. A few more strokes of my erection into Kate's mouth brought me closer to eruption. "Here it comes Katie. Swallow all of Daddy's cum." Spurt Spurt Spurt. Kate swallowed my cream as I pumped stream after stream of the goo.