Mom joins the fun

"I shouldn't..." Elizabeth said, unsure of herself.

Kelly huffed in mild annoyance at Elizabeth's ****. With Jeremy's head still between her soft melons, she leaned forward and clutched his wrists that still propped himself up on the desk. She sneakily snaked her fingers down the back of his arm and grazed the wishing rock. It was time to move things along.

"I wish you'd just get over here and help us out already", Kelly complained.

Elizabeth stepped forward, pressing her chest into Kelly's back and holding Kelly's hips delicately. She tentatively slid her hands around Kelly's mature, wide hips and up her stomach. She pressed herself into Kelly's ample behind. Kelly moaned and grinded her butt in a circular motion against Elizabeth's stomach.

Jeremy continued to mash his face into Kelly's bust. From behind her, Elizabeth slid her hands upwards and gently cupped Kelly's tits through her bra. She gave them a soft squeeze and pushed them up tightly into Jeremy's face. At first, she bounced each breast individually, causing Jeremy's head to rock from side to side between them; then she bounced them together, Jeremy gaining air time with each bounce before slapping back into Kelly's canyon.

Kelly bowed her head and moaned in excitement. Looking down past her bosom, she spied Jeremy's impressive cock. It stood only at half mast after his recent explosion down her throat.

"I wish Jeremy was ready to go again", Kelly said wistfully.

Jeremy was still too pre-occupied with Kelly's rack to hear her, but felt his cock stiffen suddenly. It bounded up to a 45 degree angle and slapped against the underside of Kelly's pelvis, wedging itself between her plush thighs. Kelly narrowed her stance and squeezed her thighs around Jeremy's massive rod, grinding her pussy against the head. She reached down with her non-wishing-rock hand and began stroking the base of his cock as best she could while he motorboated her tits.

"and I wish he had the stamina to satisfy us both," Kelly added.

Jeremy felt a strange sensation in his balls, as if they were filling up. They swelled larger between his legs, becoming uncomfortable. Jeremy removed his face from Kelly's rack and sat back on the desk to adjust his legs wider. His nuts sagged heavily as they grew, quickly surpassing the size of tennis balls. Jeremy moaned and watched his mother bounce his slutty neighbour's tits for him from behind. His balls swelled larger still. Finally the growth slowed as his nuts reached softball size.

"Holy fuck! What'd you do to my nuts Ms. Swenson?" Jeremy asked in amazement, finally noticing her hand also clutching the wishing rock. He felt recharged and virile, ready to give these two milfs a magically enhanced dicking. Kelly loomed over him, stroking his cock as it rested between her thighs. Elizabeth, standing about 2 feet shorter, bounced Kelly's tits and watched the action from around her shoulder.

"Language young man!" Elizabeth scolded playfully.

"Indeed dear, besides, you haven't seen anything yet." Kelly added mischeviously.