Silly silly mad silly absurd insane lunatic idiotic irrational ridiculous looney whacky dumb zany wacky nutty idiot straightforward loony nonsensical idiotical unreasonable kooky asinine weak daft unwise preposterous slow cuckoo fatuous dippy jerky senseless daffy sappy out to lunch screwball harebrained dotty witless inept simpleminded brainless weak-minded crackpot unreasoning kookie moronic balmy cockeyed 50 %-baked tomfool bubbleheaded illogical lunkheaded featherheaded clueless thoughtless fifty percent-witted dense imbecile imbecilic dopey ludicrous uninteresting unreasoned unintelligent dorky mindless dim obtuse feebleminded Mind-lifeless vacuous lamebrain doltish opaque thickheaded thick invalid laughable pinheaded gentle fallacious dunderheaded farcical oafish nonrational dopy softheaded lamebrained unsound surd knuckleheaded clownish 다이어트 vacant-headed dim-witted gormless chuckleheaded airheaded notional slow-witted unwell-suggested boobish buffoonish chowderheaded birdbrained unconsidered
With Eric concussed instead of considering Obviously, Andrew is the sole grown-up while in the room who appears to have his head screwed on straight, representing the standpoint with the audience: These people are crazy
You can utilize it to indicate not reasonable a crazy concept . You can even utilize it to signify very angry, really enthusiastic or pretty enthusiastic: She'll go crazy if she finds out. The crowd went crazy.