American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Have a screw loose


Act crazy. Wacky. (Compare to Lost your marbles, Loco,Loony, Schizo, Have a screw loose, On the edge, Gaga or Pickle short of a barrel.)

“I listened to his theory about UFO’s and I must admit he has a screw loose.”



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