It's funny because it's true:
Martin, Harper, and Layton are flying on the Executive Airbus to a gathering in British Columbia when Martin turns to Harper and says, chuckling, "You know, I could throw a $1000 bill out the window right now and make someone very happy." Harper shrugs and replies, "Well, I could throw ten $100 bills out the window and make ten people happy."
Not to be outdone, Layton says, "Well I could throw a hundred $10 bills out the window and make a hundred people happy."
The pilot rolls his eyes and says to his co-pilot, "Such arrogant jerks back there. Heck, I could throw all three of them out the window and make 32 million people happy."