Why Sharks Circle You Befor Attacking

Two great white sharks swimming in the ocean spied survivors of a ship that had sunk.
"Follow me son", the father shark said to his son, and they swam to the survivors.

"First we swim around them a few times with just the tip of our fins showing."  And they did.

"Well done, son!  Now we swim around them a few times with all of our fins showing."
   And they did.

"Now we eat everybody."
  And they did.

When they were both gorged, the son asked, "Dad, why didn't we just eat them?  Why did we swim around and around them?"

His wise father replied, "Because they taste better without the shit inside!"

No need to thank me, try to learn something new every day.