I am (still!) a virgin and have a question about the hymen. I know mine is not entirely intact, because I did a lot of horseback riding as a child. But as I'm not a tampon-user (nor wish to become one), I'm not exactly sure how painful intercourse will be, for the first time, nor what will happen to the hymen.

I always assumed it was a thin membrane that, upon penetration, would shrink evenly to the sides. But I seem to have what you might call a flesh tab, and though I've looked at pictures offered in Our Bodies, Ourselves, I'm not sure I understand how an opening will be created, and have the horrifying idea that a piece of flesh is going to drop out or be torn right out of me. Is it normal to have a flesh tab? What will happen to it? And if I tried inserting a tampon, would that facilitate the tearing process? Please help.

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've always come to this site to either browse through others' problems and compare them to my own and because I've been sexually curious for as long as I can remember. Recently, a guy I've been friends with and I have started to "get to know each other." Last night, this question arose: How exactly do you "suck balls" and what are the benefits? I looked through everyone's questions, and I didn't see this one.

I am a twenty-three-year-old male who has a question about my scrotum. My scrotum seems to be tight up against my body, only sometimes does it drop a little lower. I thought that maybe my scrotum was just late in growing properly. Now I am not so sure. What should I do?

I took a piss and found a purple mark on my penis. I have taken a blood test, and the results are on the way to check for HIV, but I can't wait. What do you think it is? Did I just masturbate too hard? I did just yesterday.

I have a weird question. My boyfriend and I were talking and he told me that men's balls move on their own throughout the day. I did not believe him so he showed me. He got undressed and laid back on the bed and told me to lift his penis and watch real close. I did and unbelievably, his balls moved. It's like they vibrated kind of like a heart beat. It was so cool. What makes a man's balls move alone?

Should a normal man's penis become erect for a certain number of times throughout one day (without any external stimulus)? Or, do these erections occur only while a man is sleeping? I have been masturbating once every day or every other day, and I have noticed that I rarely get any of those spontaneous erections during the day at all. Plus, I have been waking up with no morning erection during the past week. Have I been masturbating too much?