jack diddly dipshit
A jack diddly dipshit is a person who does everything wrong but still thinks they’re the best at everything and everyone else is a failure.
My dad is a jack diddly dipshit. He thought he could fix the TV by putting it in the fridge and calling it ‘cooling it down.’
My teacher is a jack diddly dipshit. She failed me for spelling ‘cat’ as ‘c a t’ and said I was lazy.
My friend is a jack diddly dipshit. He tried to build a fort out of cereal boxes and called it ‘The Crisp Castle.’