Daft Egg
A daft egg is someone who tries to be cool but ends up being a total idiot and gets mocked for it.
He tried to do a backflip off a chair and landed in a bowl of soup. Everyone called him a daft egg.
She tried to sing a song but forgot the words and made a fool of herself.
He tried to act like a superhero but got stuck in a traffic jam. His friends laughed at him.