jack diddly dipshit
A jack diddly dipshit is someone who’s so dumb they think they’re smart and still manage to be the worst at everything.
My teacher is a jack diddly dipshit. She told us the sky was green and called it ‘advanced science.’
My mom is a jack diddly dipshit. She tried to make pizza and used ketchup instead of cheese.
My friend is a jack diddly dipshit. He tried to sing a song and said it was ‘a masterpiece.’