Gary wakes. Frank and Nana are already at it

"Oh hon, that's the way," Nana crooned. "Yes, Frank, do me, love."

Gary opened his eyes to the morning. Bernie slept, sprawled next to him on the fold-out second bed that covered the breakfast table. Her taste was still on his lips. His mouth watered.

The RV gently rocked as Grandpa Frank gave it to Nana in the back bed. Her legs folded round his butt, urging on his thrusts. Grandpa's balls tightened and lifted. His cock root was bare of cock ring or strap, needing no help to keep his morning wood hard.

Gary paused a moment to admire them. They'd been fucking for nearly fifty years now, maybe longer if they'd started before Grandma got pregnant with Uncle Ned. Grandma had ridden that cock for literally hundreds of miles, with thousands of orgasms along the way. He looked down at Bernie. Would that be true for them? Could Gary keep her, or would Bernie go back to women? She was sure hungry for Nana's cunt.

Gary felt pressure in his bladder. He stood up and quietly eased his way out the door.

The desert morning was still cool, and the breeze gentle on Gary's naked skin. They were miles from anything on the side of a country road, the arid countryside mostly sand, rocks, bare dirt and scrubby bushes. Gary took a deep breath, letting his erection slowly soften.

As he was pissing, he heard Grandpa Frank and Nana catch the orgasm they were chasing. Nana went off first with a squeal, then Frank groaned aloud as his morning gun fired.

Gary shook himself off and sat in the folding picnic chair next to the RV to enjoy a quiet moment.