It is pretty common to hear women say size doesn't matter as long as he "knows what to do with it." First, let's make it a given the good sex is a full contact sport with mouths, tongues, hands and generally rubbing up against each other. This leaves us with penetration and intercourse. Here's the question: What constitutes "knows what to do with it" for a well endowed guy. Or what does a man have to do, in your opinion, to earn style points once you get down to fucking.