If you see your friend Jack on the opposite side of the terminal, be very careful how you yell “Hi” to him.
True story from my rabbi, first name Jack. As he was walking down the aisle of a plane to his seat, one of our congregants recognized him and shouted out “High Jack”.
He was immediately jumped on by Sky Marshals. Fortunately Rabbi Jack explained to the Marshals that he was “Jack” and Stupid was released.
My joke: To prove that he was a rabbi, he immediately cut off three feet of the plane’s nose and said “Don’t worry, it will grow back”.