Manga in which everyone, or almost everyone, is a moron/crazy/paranoid

Doesn't include psychological manga.
The difference between "moron" and "crazy"
Moron: does stupid things/is an idiot
Crazy: does potentially dangerous things, often for no legitimate reason
 - the main character is an exception/is normal
 - crazy
 - morons
 - paranoid
 - applies to everyone (if "" is there, then it applies to everyone BUT the main character)