ape about apish asinine balmy bananas barmy bats batty beany befooled beguiled besotted bonkers brainless buffoonish buggy bughouse bugs bugs on cockeyed cracked on crackers crazy crazy about credulous cuckoo daffy daft dazed dippy dizzy doting dotty dumb empty-headed fatuitous fatuous featherbrained featherheaded flaky flipped fluttery fond fool foolheaded foolish freaked-out frivolous fruitcakey fruity fuddled futile gaga over giddy giddy-brained giddy-headed giddy-pated giddy-witted gone on goofy gulled harebrain harebrained haywire hepped up over hipped on hot about idiotic imbecile inane inept infatuated insane just plain nuts kooky loony loopy mad mad about maudlin moronic nuts nuts about nuts on nutty off the hinges off the track off the wall potty rattlebrained rattleheaded rattlepated round the bend sappy scatterbrained scramblebrained screwball screwballs screwy senseless sentimental shatterbrained silly slaphappy starry-eyed over steamed up about stupid thoughtless turned-on wacky wet wild about witless