Some people's voice makes me upset?

Hi. My neighbor kid has some kinda annoying voice. He laughs very loud and kinda feels offensive like the laughter when someone is insluting you? He also sometimes mimicking the sounds from our house, like FARTS, my broken voice when I yell at the TV...

I actually grew paranoid thoughts that he talks about me with his teen cousins and make them laugh at me? I also have a thought that he asked his little cousins to call names to insult me. Sometimes I just want to confront him and hurt him. But I know it's not healthy and that I have to think more positive.

I'm pretty sure I never did anything wrong to this kid or the family of my neighbor. my father makes friends with a couple of them very well.

I think this kid is a sissy in some way because he talks and laughs big but doesn't want to face me himself and tell me what's the problem. I guess he's the kind of people who likes to make fun of people just to make him feeling better about himself. I don't know, right.

my point is I live with bipolar disorder and I just want to feel best during my manic-depressive episodes. Is there a way to feel more comfortable with uncomforting voices? how do I feel good and letting go of bad impulses? thnx and sorry if my insufficient english is confusing.