In Thud, Terry Pratchett nails conspiracy theory:
“Like it was haunted, Dave said. He said the government hushed it up.”
“Yeah, but your mate Dave says the government always hushes things up, Nobby,” said Fred.
“Well, they do.”
“Except he always gets to hear about ’em, and he never gets hushed up,” said Fred.
“I know you like to point the finger of scoff, Sarge, but there’s a lot goes on that we don’t know about.”
“Like what, exactly?” Colon retorted. “Name me one thing that’s going on that you don’t know about. There — you can’t can you?”