balmy bananas barmy bats batty beany bonkers buggy bughouse bugs cracked crackers crazy cuckoo daffy daft demented dippy dotty flaky flipped freaked-out fruitcakey fruity gaga goofy haywire just plain nuts kooky loony loopy mad nutty off the hinges off the track off the wall potty round the bend screwball screwballs screwy slaphappy unbalanced wacky