Sorry, boys, but when you're doing that marvelous thing you do that makes her eyes roll back in her head, there's a pretty good chance that she's playing one of her mental fantasy reels. And it might not always be starring you. Oh, don't act so surprised - it's not like you never do it. If you'd like to play a bigger role in her randy daydreams, why not encourage her to spin her saucy tale out loud so you can both enjoy it.
