spatrat
A spatrat is an idiotic individual. Someone who is so foolish and stupid that you can't do anything but facepalm as they ramble on about the most bizarre stuff you can imagine.
Johnathan: The Earth is so fucking flat. Astronauts are lying to us. We live on a flat EARTH!
Matt: Come listen to what this spatrat dumbass has to say.
Matt: Come listen to what this spatrat dumbass has to say.