A lesson to Shark-How to eat humans?

A mother shark is teaching her young how to eat humans.
“First, you go straight at them and then you circle them. You go straight at them again and circle them again. Finally, you go straight at them and then you eat them”

“But, mom, why can’t I just eat them the first time around?”

“Well, I suppose you can, but why would you want to eat them with all the shit still inside?”