The man's dick never accidentally slips out at the wrong moment. A straight woman will go mad with ecstasy when a lesbian eats her out. Two or more high school girls left alone all weekend in a big house will invariably engage in lesbian sex. And when little sis complains about being left out, she is immediately introduced to every sex act imaginable. If you're a single male, visiting married friends will involve your fucking the wife while the husband fucks you because, you know, it just feels right.
All attractive women are insatiably bisexual.
That's why two women having sex with each other will instantly drop everything and pay all their attention to the man who just walked in on their scene. All married men are under-endowed, and every wife cheats with a man whose dick is twice her husband's size. Husbands never raise an eyebrow when their wives leave the house alone at night dressed in sexy stockings and a garter belt, and head off to the bar. No man ever has any objections when his wife comes home from that bar and tells him how a stranger just fucked her better than she'd ever gotten it from her husband. Instead of being mad, having just learned that his wife cheated on him with another man, a husband will get more turned on than he's ever been in his life and willingly suck the strange man's cum out of his wife's pussy.