Since we are telling jokes... here goes:

Santa was loading up his sleigh on Christmas Eve and was greeted by an FAA Jumpseater. He tells Santa, "I'll be riding along giving you your yearly checkride, can I see your weight and balance and certificates?"

"Sure" Santa says, handing over his documentation.

While the JS'er was looking over his credentials, Santa does a thorough preflight, checks on the reindeer and hops in. While they were buckling up, Santa looks over at the FAA jumpseater and says, "Hey, I gotta ask, what is the shotgun for?" the FAA guy looks at Santa, smiles and says, "Well.. you are going to lose an engine on takeoff."