autistic

having or connected with a developmental condition in which a person communicates and behaves with others differently from most people, and often repeats actions and has very strong interests in a few subjects

(offensive) stupid and bad at understanding and dealing with other people, said to insult someone

(slang, offensive) Lame, uncool, stupid.

(Internet) obsessed with something in an unhealthy way and hating any disagreement or criticism, said to make fun of someone

A person who has autism.