naitard
A person who's so clueless they think a pig could be a president. They believe in nonsense that even a brain-dead baboon would roll in the dirt at.
My neighbor thinks the sky is made of pizza. I said, 'You're a naitard.' He said, 'You're a naitard.'
My brother's friend thinks gravity is a lie. He's a naitard.
My teacher said the Earth is flat. I said, 'You're a naitard.' She said, 'You're a naitard.'