As they say, you cannot have everything in this world Thunder Testosterone. You may have all the riches on earth but you may have a 'little' problem in your penis. Men who have small penis size can have insecurities and it may affect their self-confidence especially in the bedroom area. Most men who have troubles in their sex life may be brought by the small size of penis. However, having a small penis is not the only factor of having sex problems. This may be caused by impotence, premature ejaculation and erectile dysfunction.