I don't care who y'ar...
A Kentucky way of saying 'I don’t care who you are, and I’m going to prove it by being the most annoying person ever.'
'I don't care who y'ar. I’m going to annoy you until you cry.'
'I don't care who y'ar. I’m the most annoying person here.'
'I don't care who y'ar. You’re gonna be annoyed for the rest of your life.'