I just felt like the things they were saying (Maki in particular) seemed very...Sex For Dummies or something.
"You get a lot more sensitivity than doing it over your skirt..."
"Move your pelvis like that and stroke your clitoris..."
"It's proof that your body is reaching climax..."
Just sounds so Sex-Ed 101. Doesn't sound like what real people say when they're having sex unless they've got a Doctor/Sex-Ed Instructor fetish.