Meaning of the word "have a cow" in English

What does "have a cow" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

have a cow

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

Idiom

to become very angry, upset, or agitated about something, often over a minor issue

Example:
Don't have a cow just because I'm five minutes late.
My mom is going to have a cow when she sees this mess.