to become mentally ill
to make someone laugh a lot
to suddenly laugh a lot at something
used for saying that something is not as good as people say that it is
But you're clearly having some kind of a crack-up, so I suggest you take three weeks off.
He just cracked up from the stress.
If you must crack up... crack does it best It's hard to even write the word.
Little kids just crack me up with the things they say.
Reassure me you're not one of the crack-up cases we hear about.
The girls all cracked up when they saw him.
They'll crack up at John's place when I tell them about this.
Two: you can be active by putting up a front and bustling around until you crack up with sheer exhaustion.
cracks up
cracking up
cracked up
There is no origin for this phrasal verb
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