go through an emotional breakdown
to burst into laughter or to laugh non-stop
start behaving in an abnormal manner
suffering from a mental collapse
lose control
go to pieces
have somebody in hysterics
The entire group cracked up at the joke of their teacher.
I tried my best to control my emotions – but finally, I cracked up.
I cracked up when the doctor observed a minute of silence.
I was in a crack up when I shouted in front of everyone.
I was supposed to appear serious in front of the audience, but it was so hard to control that I cracked up many times during the debate.
I suggest you that do not stress much about your work otherwise you may crack up.
He cracks me up whenever he tries to mimic me.
There is no origin for this idiom
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definition
Common phrase that has a specific meaning.