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?

While reading some of your responses to female arousal, you say that the clitoris is as sensitive as the penis. Why is it then that when I touch mine, I get only a little pleasure, if any? Yes, I know where the clitoris is, so that's not the problem. What's wrong with me?

I was wondering if it is possible for a man's penis to be too small for a condom to work properly? No specific dilemma in my case, just wondering, thanks!