have a cow
US /hæv ə kaʊ/
UK /hæv ə kaʊ/

1.
surtar, ficar furioso, fazer um escândalo
to become very angry, upset, or agitated about something, often over a minor issue
:
•
Don't have a cow just because I'm five minutes late.
Não surtar só porque estou cinco minutos atrasado.
•
My mom is going to have a cow when she sees this mess.
Minha mãe vai surtar quando vir essa bagunça.