Two white sharks swimming in the ocean spotted survivors of a sunken boat..
"Follow me son" said the older more experienced shark, and they swam over to the people.
"First we swim around them a few times with just the tip of our fins showing" he said, and they did.
"Well done, son! Now we swim around them a few more times with all of our fins showing" and they did.
"Now we eat everybody" and they did.
When they were both gorged, the younger shark asked "Why didn't we just eat them right away? Why did we first swim around them?"
The older shark replied "Trust me they taste better without the shit inside!"