WordNet (r) 3.0 (2006):

have a fit
    v 1: 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, fly off the handle, flip one's wig,
         lose one's temper, blow a fuse, go ballistic]