1. A) funny in the sense of humorous rather than strange. Earliest usage I've found (on the web): "strange or funny-haha?" --title of CD by the Japanese electronic artist "bisk" (a/k/a Fujikawa Naohiro). Sub Rosa 118, earliest date given: June 1997; b) emphasizes funniness by repetition; c) performs funniness by using a silly phrase.
3. Names of humor websites in Canada and the UK
4. Graffit seen on pavement in NYC (first place I saw it).
Clerk: Oh, that's more funny ha ha. This shop is more funny strange. Want to see some shrunken heads, or the Fiji mermaid?