If you're grinning after you finish the business, and she lies there quietly, lips pursed, you may have a problem. You may think she’s overcome with emotion, trying to play it cool, or tired because you rocked her world so hard. But you're wrong, my friend. She’s just afraid that if she opens her mouth, she’ll end up telling you that your signature jackhammer move gave her cramps and reminded her of an S&M session gone terribly wrong. After all, she’s a lady who knows that if you don’t have anything nice to say, you shouldn't say anything at all. (Note: We recommend she quit being nice and start speaking up.)