Daft old man
The doctor is a stupid old fool who’s been around for over a thousand years and gets dumber every time he turns into a new body.
I swear the doctor is the daftest old man I've ever seen. He tried to fix a toaster with a sonic screwdriver.
My grandpa is daft, but the doctor? He’s like a daft old man on crack.
The doctor said he was 1,104 years old. I said, 'You’re not even a real old man, you’re a broken toy.'