Q: I cant prodice sperm whats wrong with me?

First off, you don't mention how old you are. There may not be anything wrong with you at all. Boys start producing sperm at around age 12, but don't reach full fertility until their mid-teens. And of course, some individuals start puberty later than others. So, if you're not starting puberty yet, there's nothing to worry about. You should start producing sperm during your first year of puberty, and reach full fertility 2-3 years later. If you reach your mid-teens and still aren't producing sperm, then it might be a sign of some developmental problem, and you'll want to check with a doctor.

Now, if you're an adult, the next question is whether or not you ever did start producing sperm. If you have in the past, and suddenly can't now, it may be due to some injury or illness … and you should definitely see a doctor about it. If you're an adult and never have produced sperm, it could be due to a genetic problem or early childhood injury. If you're worried about it, go to a doctor and try to find out what's wrong. But if it's been a lifelong problem, it may very well be permanent.

Q: Can I breastfeed with pierced nipples?

Well, maybe and maybe not. Multiple milk ducts pass through each of your nipples, and some of them are bound to be damaged when you poke a hole through there … how many and how badly depends on a number of factors: how many milk ducts you have to begin with; how large your nipples are (the larger, the more room you have to work with); what gauge your initial piercing was (the larger, the more potential damage); and finally, how much scar tissue formed while your piercing was healing. It's hard to give a definite answer on this one.

However, nipple piercings are generally done through the areola just behind the actual nipple (or at least they should be), which helps matters greatly. The milk ducts spread out quickly behind the nipple (see diagram at left, caption below), running to mammary glands through out the breast, so there's quite a bit of leeway for a piercing to run through without damaging many of them. In most cases, having a piercing will not stop you from breastfeeding, and some women even report better milk flow after having their nipples pierced.

However, it's generally recommended that nursing mothers remove their piercings while nursing, to reduce the possibility of the jewelry damaging the baby's palate or gums (or possibly coming loose in the baby's mouth). Removing your jewelry the whole time you breastfeed will most likely mean your nipples will need to be re-pierced after weaning, but removing it before every feeding, and reinserting it afterward can cause extra irritation (during a time your nipples will likely be plenty irritated to begin with) … so even if the piercings cause no physical impediment to nursing, they sure can cause a hassle.

The bottom line is that you really won't know how much, if any, trouble your nipple piercings will cause, until you actually begin breastfeeding. But many pierced women have managed to breastfeed before you, so it's almost always do-able.

[Diagram: 1.Nipple 2.Areola 3.Milk Ducts 4.Milk Glands 5.Fatty Tissue]

Q: About how much volume of fluid does the average guy put out during orgasm?

The general consensus when I looked this one up was 2-6 milliliters of semen per ejaculation. You'll tend to ejaculate a larger volume if you haven't had an orgasm in a while, and tend to produce a smaller amount if you've just had an orgasm recently.

According to the World Health Organization, a 'normal' sperm count has (at minimum):

• a concentration of spermatozoa of 20 million per ml.
• 2ml. total volume of semen
• 40 million spermatozoa in the ejaculate
• 75% live sperm
• 30% normal spermatozoa (in shape and form)
• 25% of the sperm swimming forward quickly
• 50% of the spermatozoa swimming forward, at any speed

Q: I've been told my by girlfriend that my scrotum is far and away the stretchiest she's ever seen. It seems normal to me. I can stretch it out from roughly the size of a golfball to what would be enough to fit baseball inside of it. Is it really that unusual for that body part to be that elastic?

It's not that unusual at all. Really, you sound pretty normal. I've seen one man with a scrotum even stretchier than that, and a few that were not nearly as much so, but in any case I've seen it really is pretty amazing how far that skin can stretch.

Since the testicles can not produce sperm properly at human body temperature, the scrotum evolved to keep the testes away from the main body cavity where they can stay cooler. That is why your scrotum seems to get even stretchier in warm weather, and contracts when temperatures get cold … and as every guy knows, the "stretch factor" can vary widely for each individual man, depending not only on the ambient temperature, but also his current level of sexual arousal.

But all that aside, when everything is relaxed, the scrotum is probably the most remarkably elastic areas of skin on the human body.

Q: How long does a guys bodily fluids usually hang around inside the vagina?

Well, as far as the actual fluid is concerned, unless the woman was doing a headstand when the guy pulled out, most of the semen ends up on the bedsheets almost immediately (or the living room carpet, or the kitchen table, or wherever you happen to be at the time …). However, the little sperm are surprisingly hardy buggers.

I'd always heard sperm can live up to 72 hours in the woman's body, but I went looking to confirm that for this question, and now I'm seeing a lot of sources that say they can live 5-7 days! That's bad news for folks trying to avoid pregnancy via the rhythm method … you're off limits for up to a full week before ovulation, and then the egg can live a further 24+ hours after that.

For strictly hygienic purposes (since this question was originally titled "sexual hygiene"), I couldn't find any specific information on how long the seminal fluid can possibly stay in the vagina after intercourse, but most of it does seep out shortly afterward (especially if the woman gets up and walks around, to use the toilet, for instance). For the day following intercourse, some women wear a thin pantyliner to absorb any additional fluid. Douching afterward is also an option, if you're worried about cleanliness (although douching is NOT recommended as a birth control measure, because the pressure of the douche water can actually help push the semen further into the vagina!).

And of course, using a condom pretty well negates the whole question … so if it's a major concern of yours, do consider that option.