Maria Pavlova, Part 3

Maria Pavlova, Part 3 by cactusman

"I then started to tease him again, saying:"

"'Do you want to try measuring your arousal while you are inside me?'"

"But he was so into his work, that he hardly looked up while he explained that the computer system couldn't handle that measurement yet."

"Still, all this was starting to penetrate his engineering brain and turn his thoughts in my direction. He started fantasizing about my being able to read his arousal on a meter as we fucked..."