Informal or slang terms for mentally irregular(adjective)
WordNet. Princeton University. 2010.
Use "kookie" in a sentence
"His theories are rather kookie, which isn't new for the "ex" - gay crowd, but what is new is that Cohen was allegedly expelled from the American Counseling Association in 2003 for serious ethical violations involving his therapy practice."
"In our interview with Zarin, she discusses who she calls "kookie" on the show, how she landed the part on the hit Bravo show and her book, Secrets of a Jewish Mother: Real Advice, Real Stories, Real Love."
"Great, just what we need: Another secretive non-transparent kookie Catholic organization."