how to hump

“'Kay,” I agreed, feeling the blush growing in my cheeks. Maybe I didn't want Grandpa to know quite yet... but I was totally looking forward to eating his cum out of her pussy, even so! “And speaking of taking nice big loads... ready for your turn, Mom?”“I'd love to, sweetheart!” she laughed. “But even your Daddy needs at least a little time to recover, first!”

“Are you stupid?” she hissed at me. “Go to the fitting room. I’ll be there in a minute. And lose the pants.” The light finally went on for me and I raced back to the fitting room. All the doors to the stalls were open, so no one else was there. I quickly stripped out of my pants and underwear and stroked my cock to its full glory. I was admiring my dick in the full length mirror when there was a soft knock at the door.“Sir? I have some other items for you to try. May I open the door?”

“Here. Like that. You’ll make me cum.” She withdrew her hand and began to paw at my belt buckle. She opened my pants roughly and plunged her hands through the waistband of my underwear, grasping my ball sack with one hand, wrapping the fingers of her other hand around my shaft, stroking me hard. If I hadn’t already jacked off twice that day, I would have cum right there. Mrs. B. was staring me in the face, looking stern, but her face was reddening and her breathing more rapid with her oncoming orgasm.