9. Most women orgasm through intercourse. I'm not going to harp on about this one because anyone who's ever read any of my other articles practically has it written on their forehead in felt tip marker pen that only 30% of women orgasm from penetration alone. But it is worth repeating. Most women need stimulation of the clitoris by a hand or a vibrator during intercourse in order to climax. It's not anyone's fault that the penis isn't enough; it's a design fault in the female body. The clitoris is outside the vagina, rather than inside it (not terribly helpful of whoever has the female body patent, I agree). True, some women claim to have fabulous orgasms through front vaginal wall stimulation. But the good old-fashioned clitoral orgasm is far more common and reliable.

10. Men are always ready for and want sex. If you're talking a 17-year-old who's just landed his first girlfriend, you're probably right. It's likely he will walk, talk, daydream and want to have sex every waking second (and when he's asleep as well). But once a man hits his mid-20s (and often before that), other parts of his life start to become equally as important as sex, and all that energy and focus is needed elsewhere. Real life dampens a lot of men's sex drives more efficiently than a bucket of water poured over a solitary lit match. Work, stress, pressure, bills, arguments… they all stop him (and you!) from feeling like sex all day, every day. He's not like your vibrator; you can't just plug him in and expect him to perform on cue. (Actually, that's why we own vibrators.) There is a man attached to that penis.

• *Read the rest of Tracey's columns
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