See also: Berko English Adjective berko (not comparable) (slang) mad; crazy 2000, Jessica A. Gunderson, How to Keep a Secret for Detectives, page 110:I know it might sound like I've gone berko […] 2005, Henrik Moller, Renaissance, page 263:You're bloody berko, Koko! And who's driving? Manny? He's more round the bend than you! Anagrams Borek, Kober, borek, brokeWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads