An elderly couple is vacationing in the West. Sam always wanted a
 pair of authentic cowboy boots. Seeing some on sale one day, he
 buys them, wears them home, walking proudly. He walks into their
 room and says to his wife, "Notice anything different, Bessie?" 
 
 Bessie looks him over, "Nope." 
 
 Sam says excitedly, "Come on, Bessie, take a good look. Notice
 anything different about me?" 
 
 Bessie looks again, "Nope." 
 
 Frustrated, Sam storms off into the bathroom, undresses, and walks
 back into the room completely naked except for his boots. Again,
 he asks, a little louder this time, "Notice anything DIFFERENT?" 
 
 Bessie looks up and says, "Sam, what's different? It's hanging
 down today, it was hanging down yesterday, it'll be hanging down
 again tomorrow."
 
 Furious, Sam yells, "AND DO YOU KNOW WHY IT IS HANGING DOWN,
 BESSIE? IT'S HANGING DOWN BECAUSE IT'S LOOKING AT MY NEW BOOTS!!!" 
 
 To which Bessie replies, "Shoulda bought a hat, Sam.
 Shoulda bought a hat."