Maria Pavlova, Part 3
"And after a while Tom started to ask me what all this fuss about lipstick was about, so I told him my idea for the experiment."
"Tom was intrigued by the measurement problem, since as an engineer he loved that sort of thing. But he was finding it hard to think straight about it as we talked, since our bedroom was such a sexually charged place. He filed the problem away in the back of his mind as he prepared to devote himself to that night's sexual activities."
"A few days later Tom invented an electric measurement apparatus for measuring the strength of a man's arousal. The first prototype was something like a blood pressure cuff, that the man puts around his penis, and measures how much blood is trapped in the penis -- how hard he is. So we called it the hardness meter."