Because it cracked itself up.
Omlet!
Because the egg cracked a yolk.
Because they crack themselves up!
Because if he lifted up both legs it would fall over !
Bazinga! nobody cares! you fell for one of my practical jokes again.
You stop laughing and shoot him again.
Stop laughing and reload.
Their teacher told them not to use tables!
When he turned the tables on the Temple vendors!