My little brother was playing in a party with his friend until this kid joined. I don't know how old he is but he is under 13 at most, I think he is 10. He ekpt saying that he "raped and shagged" my mum and that he will "hack me". I asked him how to hack since I already know but 
was testing him. He didn't shut up and just kept on waffling. This is the most I found. 

PSN: shahan_bfd 
Age?: Probably 9 - 11 
Location: United Kingdom, England, West Yorkshire, Bradford 

Please try to do something about him he is taking the piss.