(the flat/ flat of one’s feet)- A term used to describe how high the heels of the feet are in proportion to the ground while the balls of the feet are on ground during quadrobics.
One who lacks the most important organ, a brain. One who believes that the Earth is Flat, and that space doesn't exist and is just a 'dome' around the Earth and everything is a lie told by the government.
Guy 1: How do u feel about Flat Earthers?
Guy 2: I feel that all Flat Earthers should be sent up in a rocket, and ejected into space, so their last sight will be a Spherical Earth in Space.