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