kajun
A Cajun is a person who thinks they're smart, but they're really just a trashy swamp rat with a low I. Q. and a tendency to eat cat food for breakfast.
My cousin is a Cajun. He thinks he's the king of the swamp, but he still lives in his mom's basement.
At the local bar, the Cajun started a fight over who had the bigger beard.
The Cajun tried to explain quantum physics using a chicken and a bucket of gumbo.