What are some good comebacks for my neighbor?

Basically my older neighbor who is like a 16/17 year old boy I think started messing with me for no reason. He is "friends" with my older brother who is 19 and im 13 and short. He called my name then said either cricket,midget,tiny,and at first he asked me which twin I was and when I said Melissa he called me Mo-lissa. The only weakness I can think of on him are that his voice cracks. So basically I need some comebacks.