Say it, Randi." I'm so choked up with joy that I can't talk and I'm crying and having a hard time seeing through the blurs of my tears. I shout, "Yes!..., as loud as I can and hear another, "Wah-hoo!" and then "Are you okay?" Breathing better now, I shout again, "Yes!, You?" "Ay-Oh-Kay!" Sensei is turning to look for me and he watches as I spiral down to match our altitudes. I see him talking on his cell phone and he yells, "Did you puke?" "No!" I laugh. "Good, that's one less thing they have to. I'm cumming!" I can tell she's not lying from the way her pussy instant clenched so hard around my cock. The mixture from her sex voice and her pussy squeezing me so tight all of a sudden sends me over the edge. I can't form words at the moment to answer her back; all that leaves my mouth is a groan as I feel the pressure building myself. She screams louder than before as she gets the sweet release she's been yearning, I feel her pussy constrict my dick even tighter than before pulsing as her. They swam naked. Lisa remembered skinny dipping here when they were kids a few times - when their aunt and uncle had gone into town for the day, of course. They splashed and played for awhile - including a little grab ass and some goosing - and finally swam out well beyond the float and then back to it. They climbed up onto the floating platform and stretched out in the sun to rest. Not surprisingly, they soon began to fondle each other and before too long Dan's "score" had climbed to ten.. I was always wanting to see her naked, but as I sat there freezing, I didn't even think about turning to look. As soon as she was undressed she slipped into the down-filled sleeping bag and told me to do the same. She could tell I was a little reluctant and said, "Come on, you're going to get pneumonia. I'll close my eyes. Hurry!"As I stripped down to my underwear it dawned on me that I was about to get into the sleeping bag next to my naked mother. I didn't know if it was the cold that was.