I am 14 years old and i am very attracted to girls and i am ready to have sex for the first time. But so far every girl i have shown my penis to has burst out laughing. My penis is 4.75 inches long erect. isn't that about the size it should be for someone my age? Aren't these girls just being immature and expecting too much? please, please help me with this. it is really getting on my nerves when they laugh at me.