a bag full of twat
A bag full of twat is when you’re so thick you need a bag to hold all the twat that’s stuck to your brain.
My mom is a bag full of twat. She thinks the sky is a big ceiling.
My boss is a bag full of twat. He wears a hat with a hat.
My math teacher is a bag full of twat. She says 1+1 is 3.