Wes Phillips

I've seen this attributed to the USAF, Quantas, and the Marine Air Corps. Personally, I think they're too perfect to be real, although my buddy Steve (who was a Marine pilot and AvTech) sez these are plausible.

He adds his favorite problem:
P. Sounds like midget with hammer.
S. Took away midget's hammer.

Think about that before you fly this holiday season.