Wrote able to perform any male sexual act for twenty-four hours a day with no negative effects on his arm.

Matt smiled as the ink vanished looking at his sister he said. “Hold out your arm.”

Giving her brother her arm Lisa asked. “What is that?” She watched as he wrote able to perform any female sexual act for twenty-four hours a day with no negative effects on her arm. She giggled at such a silly idea and was surprised to see the ink vanish.

“I can’t have you getting tired on me now can I.” Matt laughed as he walked over and laid on his bed. Seeing what he wanted Lisa came over and climbed into his bed straddling his hips. She slowly lowered herself on to his dick and started to bounce. She was surprised to find that the slight soreness she had been experiencing from her brother’s monster dick stretching her out was gone. She found a good rhythm and started to moan as she worked toward a new climax. Matt smiled and looked at the clock before leaning back to fully enjoy his sister’s work.

Three hours later Lisa could not believe it. She had been bouncing on her brother’s cock going from orgasm after orgasm and she still had not tired. Her brother had pumped so many loads into her she had lost count. After about his third or fourth load her body had started a constant orgasm that still had not ended. Her whole world was just moaning and pleasure as she moved her hips on instinct.

Matt smiled watching his sister have so much fun riding him. He was probably going to need to tweak a few things but overall, he was impressed with how things were going. He was wondering if he should take a break feeling a little hungry when he felt someone’s tongue on his balls.