Because it cracked itself up.
A chicken egg.
I just got laid by a chick and now I'm getting hard.
Because they would crack each other up.
A.When we see your face we both crack up!
Because he had fallen, and could not get back up.
Because it kept falling out.
I can't laugh and I can't sing. I'm finding it hard to do anything!"
Aqueous humour.
'Can I join you?'
Cause they struggle to put food on the table