Do you think I'm a bad influence?

I love to prank call and do crazy things like throw rocks before cars come and throw rocks at windows and ding dong ditch. I'm 12 years old. I think it's fun ..sometimes when my sisters dont listen to me I tell them I'll ban their clubpenguin account (but I never really do that) . I'm asking this because my neighbor friend and me had a fight and she said I was a bad influence to my little sisters because I did that stuff with them.....I sometimes call my sisters bad words like stupid or dumb but that's when they do something that makes me angry..