this kid sitting behind me on the bus is fucking annoying
What is this child doing that is annoying to you?
Kids are just annoying, in general.
It's okay to be irritated by a child's behavior, especially if you wanted to have a quiet moment to yourself. However, we shouldn't generalize and say that all kids are always annoying at all times. If nothing else, this could be offensive to their parents, who generally teach kids to be considerate of strangers.
I don't care, let the cunt behind me deal with it.
You need to change your attitude towards children. You need to understand they're not adults to know how to behave in public. It's not cool to think all kids are annoying.