"Okay, okay. It's only water, for the most part. Look at all this." And she just rubbed it all over my legs, my stomach and even my pussy. I started to get pretty excited.
"Mom, could you jerk me off now? Right now?" She didn't say anything, just took her bikini off, top and bottom and reached down to my pee covered pussy with her whole hand and rubbed expertly. At the same time she took her thumb from her left hand and inserted it right into her vagina and started moving it in and out. She had a little smirk on her face like, god, the things I do....
"Shit, Mom, I'm so excited. I think I'm going to come already. Oh. OH. SHIT, I'M COMING!" And I did. A stream of fluid came out of my pussy in three spurts and landed on my belly, my shoulder and then my face, with my eyes open, because I couldn't take my eyes off Mom, who was standing still, moving her thumb in and out of her pussy.
"Good girl, Honey. Mommy's going to finish off now, too. You just lie back and rest, this won't take but a few minutes." She kept going, looking up at the ceiling for a little while, then back down at me, smiling. "Just another few minutes Honey, I'll be done soon." She kept fucking her thumb in and out of her pussy. "Just do me a favor, Honey, and spank me a little bit while I finish."
"WOW Mom, really?"
"Yes, go ahead- your father used to put me over his knee and spank me as I jerked off. Go ahead, I'm going to keep masturbating while you do it. Sorry it's taking so long for me to come." I did as I was told, and sat up on the side of the bed and turned her so I could hold her legs as she stood sideways to me, and gently slapped her bottom while she continued to move her thumb in and out. "Harder, Honey. Yup. Mmm. That's it." I slapped harder. The sound of my hand against her ass and the churning of her wet pussy as she jerked her thumb in and out started to get me excited again. "HARDER. HARDER! HARDER AS I MASTURBATE." I started hitting her ass very hard, hard enough to leave red hand prints on it. "YES, THAT'S IT. OH YES, OH YES, HERE IT COMES. OH MY GOODNESS, I'M GOING TO COME."
Then she calmed down, barely moving her hand at all now, but my Mom hadn't come quite yet, she was making it last. "Yes, that's it, keep spanking, here I go, I'm coming now. Yes, I'm coming." Her voice was very low now, and she opened her pussy with both hands and I could see how big her clit was. I kept spanking her hard. "Keep going, here it comes." And as she looked up at the ceiling, a steady stream of come came right out of her pussy onto my other hand and onto the floor. I put my leg out to catch her fluids on it and feel its warmth. I was too embarrassed to jerk off again so soon, so I just held it in for later. "Ahhhhh..... Oh yes, oh yes, oh yes.... It feels so good. I'm coming all over you, Honey." She just stood there while her juices dripped slowly out, and didn't say anything more for another minute or two while it finished. Then she said, quietly, "Thank you, Honey. Okay, let's get changed and get to the beach."