Sam and Bessie Goldberg are senior citizens, and, Sam always wanted an expensive pair of cowboy boots. Seeing some on sale one day, he buys a pair and wears them home, asking Bessie, "So, do you notice anything different about me?"
"What's different? It's the same shirt you wore yesterday, and the same pants. What's different?"
Frustrated, Sam goes into the bathroom, undresses and comes out completely naked, wearing only his new boots. Again, he says, "Bessie, do you notice anything different about me?"
"What's different, Sam? It's hanging down today, it was hanging down yesterday, and will be hanging down tomorrow."
Angrily, Sam yells, "DO YOU KNOW WHY IT'S HANGING DOWN? Cause it's looking at my NEW BOOTS!"
Bessie replies, "You should bought a hat!"