A human who is incapable of doing neurotypical(normal) things. Instead they do things in a unique manner in which they are often percieved at being crazy but they are trully great ppl and could do a lot of things, weird yet surprising.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

(1) A person with the brainpower of a walnut, or any nut.
(2) Someone so stupid, that a nut has a higher brain cell count then them.

Someone with a nut shaped head

Someone who thinks only thoughts that include sex, having sex, or something to do with sex. Basically someone who thinks with their balls.

A really stupid person