1) It seems that I can't maintain an erection for more than a couple of minutes during intercourse. In fact, sometimes it doesn't seem to want to get up and play at all. The girlfriend is really starting to take this personally, but I know it's not her fault. Help! Are there any vitamins, diets, etc. that may help?

2) To put it very simply, I am having trouble having erections for a while now. I used to be able to. I can't have them at all, during intimate encounters or during masturbation. I get a little "hard" but cannot get completely hard. Could you please help me? Thank you!!

Here is my situation: My b/f and I had anal sex, and this was not the first time we've done it. But this time was different. After we were done I noticed there was something that kind of just popped out from my bottom. It's like a piece of your skin or muscle or something. I kept trying to push it back in, but it keeps coming back out. It doesnt cause me great pain, but just a little bit of itching sometimes. What is it? What should i do with it? Is it bad? Please let me know. Thank you.

I have found no better lubricant for masturbation than my own pre-cum. Problem is, I have plenty of it sometimes, and not nearly enough at other times (usually when I have to do it in a hurry). I would like to store some up to use for those dry times by "milking" the stuff into a small glass vial or something. However, I wonder about whether it would "spoil" or start growing bacteria, etc. If so, would that matter, since I would be using it externally on my own penis? Any ideas on how best to store it?