**Flathead (noun):** A person who denies scientific evidence and subscribes to pseudoscientific beliefs, particularly those who adhere to the idea that the Earth is flat. Often characterized by a rejection of established scientific consensus and critical thinking in favor of unfounded or debunked theories.
Possibly one of the worst screw design EVER. Once you use a flathead screwdriver to screw the flathead in something, the screwdriver will most likely slip of the screw. Also known to be very hard to use because it slips everytime