Obnutbutt
Someone so annoying, you wish you had a nut stuck in your butt instead of dealing with them.
My teacher is an obnutbutt. She yells at me for no reason.
My friend's pet parrot is an obnutbutt. It cusses and wakes me up at 3 a. m.
My dad is an obnutbutt. He eats my lunch and says it's 'taste testing'.