I'm 21 and I'm only 5'1 my penis is 6.5 inches when erect

I'm 9 years old and my penis is 15 inches (rounded) flaccid. can't get erect yet I think. should I be concerned? My mom says I will make a girl proud one day. One time, a kid in my class asked if I had a third leg, and I told him it was my dick. Everyone laughed. See, having a big dick isn't all fun and games. Sometimes you are bullied. Sometimes I never think I'll get a girlfriend because they all make fun of my too for having a third leg. Maybe I should accept that it was meant to be a leg. I might appreciate it one day, but right now life is tough with my large penis. On the bright side, I can give myself a pretty decent blowjob. Think twice before you comment your dick size. You don't know what other people are going through. Thanks.