I'm fed up and going to tell this kid to fuck off while I read.
That's pretty harsh, why do you want to tell the child off while you read?
The child was bothering me as I started to read a book
You shouldn't tell kids to fuck off, even if they're annoying you. Try explaining to them that they're bothering you and see if they're receptive to your explanation before resorting to foul language.
I don't do that shit, I just tell them off.
You may need to reconsider how you talk to the kid, what you say can be really traumatizing and stick with them. Rather than yelling at them, let their parent know that you are trying to read and need some quiet time.