jackamaroon
a person who acts like they know everything but they really don't. like a flamingo who thinks it's a flamingo expert.
He said he could fix the internet. He turned it off. He's a jackamaroon.
My teacher said he's the smartest man alive. He called 2 + 2 = 5. He's a jackamaroon.
He thinks he's a chef. He burned toast. He's a jackamaroon.