I'll admit that I've never had 'boring' sex, but I have thought of very strange other things during sex. It just kind of happens. One time, during a rather good, nice, active session I saw a shirt hanging off the dresser and it just popped into my head, "I need to do laundry..." or while making out I see a cup on the coffee table and think, "The dishwasher needs to be loaded..." it just happens. It really doesn't mean the sex is bad or boring. And it's not like that's what those women are thinking about the whole time. It probably just pops into their head for a moment or two and then they get their head back into the game.