Source : WordNet®

fly off the handle
     v : get very angry and fly into a rage; "The professor combusted
         when the student didn't know the answer to a very
         elementary question"; "Spam makes me go ballistic" [syn:
         {flip one's lid}, {blow up}, {throw a fit}, {hit the roof},
          {hit the ceiling}, {have kittens}, {have a fit}, {combust},
          {blow one's stack}, {flip one's wig}, {lose one's temper},
          {blow a fuse}, {go ballistic}]