"Mmmmm, now you can see her cunt so much better," she murmured, handing the glasses back to him. "You look at her and pretend mother's fist is her cunt, darling."

She pumped her son's cock as he peered through the field glasses. Today, Bobby did not try to press his cock against the wall, but held his hips back so his mother could jack his cock.

It seemed that Susan could see Mary more clearly today than before. She didn't need the glasses at all. Finally, neither did Bobby.

Mother and son peered out the window at the unsuspecting girl. Susan clung to her son's cock, excited to look at that naked body and stroke Bobby's prick. Her own cunt was bubbling as before, hotter now that she had hold of Bobby's cock. Her clit had become intensely inflamed, throbbing and burning inside her panties. Her tits felt swollen, her nipples sensitive. She squeezed and flexed her fingers about her son's cock, listening to his gasping.

Today, Mary did something different.

Susan and Bobby watched her pull the pillow underneath her slim body as she rolled onto her stomach. The pillow was at her crotch, and Mary straddled it with those exquisitely long thighs. When they saw her ass move, wiggling and bunching, Susan understood immediately.

"She's fucking her pillow, Bobby," she whispered and stroked his cock. "She's pretending, like you, that her pillow is a man, and she's on top of him, his cock inside her cunt, and she's fucking him. Maybe Mary is pretending it's you, baby. Think of your cock inside her hot wet pussy, fucking her. Think of mother's fist as Mary's sweet slippery pussy."

Standing at his side, feeling his small body tremble against her hip, Susan pumped tightly at her son's cock, whispering softly to him. She felt Bobby's cock throb against her palm, and her ass began to sway. Susan squeezed her thighs against her cunt and mewled softly with pleasure.