hissy fit 
/ˈhɪsi-/ noun
plural ∼ fits /ˈhɪsi-/ noun [count] informal : an uncontrolled expression of strong emotion : fit
▪ She threw/had a hissy fit [=she became very angry and upset] when I told her she couldn't go.
▪ She threw/had a hissy fit [=she became very angry and upset] when I told her she couldn't go.
