"Then suck on it, baby!" Frank replied in an agonized moan. "Don't tease me like this! My balls are so full of jism I'll probably hit the fucking ceiling when I spurt! Work out on my prick!"

There was a long pause. Then Trisha heard a low series of gurgling sounds and she knew instinctively that her mom's mouth was making obscene slurping noises as it clasped wetly around the pink flesh of Dad's stiff cock.

Trisha felt herself getting hornier and hornier. She knew it was wrong to listen in on her parents fucking, but that didn't seem to matter when her cunt felt so hot. The wetness in her pussy was so bad that the fabric of her panty crotch clung stickily to her hairy little cunt. As she listened, Trisha found herself wishing desperately that there could be some way she might witness the fantastic suck job her mom was giving her dad on the other side of the wall.

Then Trisha noticed the small hole in the wall near the level of her knees.

It was a small hole, blending so well with the color of the wallpaper that she had never noticed it in all her years of living in the same house. As quietly as she could Trisha fell to her knees and pressed her face to the wall so she could look through it.

Suddenly she could see everything! The bright lamp was on over her parents' double bed, bathing their spacious bedroom in bright light. Her hole in the wall was only about twelve feet from their mattress – Trisha could see the action as well as if she had been standing in the bedroom herself.

Her dad was lying on his back on the bed, groaning and wincing as Mildred's lips sucked the stiffness of his prick. He was naked, and for the first time Trisha saw what a really fantastic physique Frank had for a thirty-eight year-old accounting executive.