As the cocksleeve was pulled from the drawer, you held on for dear life and looked up at your unaware captor. It was quite a shock to see your mother lifting you into the air, the sheets thrown back to reveal her naked, shapely body, but the surprises weren't over as your eyes trailed down her body, a massive, erect cock jutting forth from her hips, thicker than her arm and well over six times your current size. A bit further down, a pair of balls hung down from below her huge rod, each one larger than yourself. The shock of seeing your mother naked (and sporting an erection that would put most men to shame) caused you to lose your grip, sliding down into the cocksleeve until you hit the bottom, the scent of sex and dried cum heavy in the air.
Unaware that her son was along for the ride, Hannah gripped her shaft with one hand, aiming it into the blue sleeve and slowly pushing it in, the jelly-like substance stretching tightly around her cock until the thick length popped inside, plunging into the slick sleeve with well-practiced ease. Moaning loudly, she pulled the cocksleeve up and down her throbbing pole, hoping to relieve herself before the rest of the family woke up, especially Will, since (as far as she knew) he still didn't know about her third leg. Her hands moved faster, her hips pumping into the cocksleeve as she felt herself starting to approach her peak...
Meanwhile, you were getting an up-close-and-personal view of your mother's cock. the thick head ramming into you with every thrust she made, copious amounts of precum oozing from the tip and covering you in the slick stuff, some of it ending up in your mouth as you tried to breathe between thrusts. Thankfully, between the relative softness of the tip of her length, and the springiness of the jelly-like material behind you, the impacts weren't painful, just jarring. You could hear her moaning above you, her movements getting faster and more erratic, and you knew she was about to erupt...