variants  
 or nut job
        
    
            
               plural nutjobs or nut jobs            
        
    
        informal      
      
                                
                                
              
          
                                                      : a foolish or eccentric person                                      
              
                             
Full disclosure: I'm a nutjob when it comes to instant replay in sports. … I would replay the amount of chalk being used on a field if it was thought excessive.— Ed Graney
Ed Graney
                         
                
                                
            also,                sometimes offensive                
          
                                                      : someone who is not mentally sound                                      
            
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  Merriam-Webster unabridged




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