this is a very intresting question! Now the size of the penis is different in men some have long penis's and some men have small penis's, this doesnt mean that because a 1 male has a bigger penis than another that he is better in a sexual way this not the answer. with a bigger penis there does come the down side, which is effected during sexual intercourse. the normal size of a male's penis when errect is 7 - 8 inches. no matter how small you may think your penis is it still does the small as someone with a large penis. if you are having problems with sexual intercourse with pleasing your partner then i can give you some further advice in sexual activity exercises which is garenteed to please you and your partner.