Definition of autistics:
(adj) :
Having autism, or pertaining to autism.
(n) :
A person who has autism.
(adj) :
(Internet slang, 4chan slang, offensive or self-deprecatory) Characterized by abnormal and unhealthy focus or persistence, and unhealthy hatred of opposition or criticism. Obsessive.
(adj) :
(now derogatory, offensive, slang and medically obsolete) Socially inept, self-absorbed, or stupid.
(adj) :
(slang, derogatory, offensive) Lame, uncool, stupid.