student asking question

What is the meaning of "cracking up"?

teacher

Native speaker’s answer

Rebecca

"Cracking up" means to burst into laughter. It's a phrase that is used when someone is laughing more than one would expect. Ex: The girls were cracking up during their class. Ex: I couldn't help but crack up when she told the joke. Ex: We started cracking up at the silly expressions he was making.

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