masturbate masturbate masturbate, this is the thing I do in a regular basis. And I know that it's common for all people. But my problem here is with the posture I do it. I do it on bed by rubbing my penis with the bed. I feel intense pleasure in this posture, and their is no problem with my penis erection until now. As you know it just sometimes feels a weird pain feeling which is not actually a pain if I eject twice within few minutes. I think it's common among men. Any suggestions or comments on my method please.