What you see on an airplane

This fellow spent part of the flight editing a version of "Up on the Rooftop". You know the one with Saint Nicholas and the reindeer?

He must have been on his way to a convention of colon cancer doctors.  He was in charge of the entertainment. I guess that you have to be there to get the jokes.

He got hungry and ate a salad picked up on the run from Wolfgang Puck. His doctor would approve.