I moved slightly and guided my cock into her pussy. Slowly I fucked her from behind, I could hear my balls slapping against the back of her thighs eac... time my cock hit home.“I don’t know if I can last much longer mom, I think I am close to cumming again”. With that I felt her butt push backwards against my body, as if to increase the penetration my cock was giving her.“I am about to cum too Mark, but I want you to pull out of me at the last minute, stay inside as long as you can, then I want. "Because the numbers in the equation are different. X is just an unknownnumber that you have to find to solve the problem," explained Lindsey."I still don't understand," complained Denise."Ok, look at it like this. One half hour of kissing plus X minutes offoreplay equals thirty-five minutes to reach a mutual orgasm. What's thevalue of X?"With a huge grin Denise answered, "Five minutes max." See you just need to look at the problems differently. Substitute insomething that makes you want to. And then three fingers penetrated my rear! I couldn't believe it, as I felt my cock hardening in response to this stimulation... I felt both elated, and yet shamed and humiliated, at my inability to stop my cock from becoming hard... throbbing wildly, as I grew a rampant hard-on! I knew that this obvious response would only further incite my women captors... but I was completely incapable of controlling my growing exhilaration! Apprehension and horror flowed through me, as I realised that my. "Ooh, you got a nice one," Andrea said, and while I didn't believe it was anything but part of her routine I couldn't help feeling a little pleased. She took my prick in her light tan palm and milked it, looking carefully at the end for any sign of leakage.Satisfied, apparently, she dropped the washcloth in the basin, wrung it out, and turned back to me with a small plastic basin in one hand. "Here," Andrea said, "hold this under here." She positioned the basic under my dick to protect my.