So, to un-complicate things, we thought we'd bring you a no-holds-barred explanation of a guy’s mini-me. Just as with your own anatomy, it's complicated. Some questions that have probably crossed your mind might include: Why do boys ejaculate? What do testicles actually do besides sit there? And, are there any parts of a penis that are more sensitive than others? Male genitalia might seem more self-explanatory, but there's a lot hidden under the surface that affects a guy’s health and sexual functioning. Now that we’ve told you just about everything you need to know about the vagina, we bet you're probably a little curious about the male anatomy and how it works. Today, we’re going to temporarily call the column “Boyparts,” because we’re talking everything…penis. Last week, we discussed the myths and facts about female orgasms. Welcome back to “Loving Your Ladyparts,” a bi-weekly series where we’ll be discussing everything you need to know about what’s going on below your belt, from why we wax to how you orgasm.