Definitions for throw a fit
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(verb)
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"
throw a fit(Verb)
To become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.