Cowboy boots

An elderly couple, Margaret and Bert, are in Fort Worth . Bert always
wanted a pair of authentic cowboy boots.
So seeing some on sale, he buys them, wears them back to the motel, walking proudly.
He walks into the motel room and says to his wife, "Notice anything
different about me?"
Margaret looks him over, "Nope."
Frustrated Bert storms off into the bathroom, undresses, and walks
back into the room completely naked except for the boots. Again, he
asks, a little louder this time, "Notice anything different NOW?"
Margaret looks up and says, "Bert, what's different? It's hanging
straight down today, it was hanging down yesterday, and it'll be
hanging down again tomorrow."
Furious, Bert yells, "AND DO YOU KNOW WHY IT'S HANGING STRAIGHT DOWN, MARGARET?"
"Nope," she replies.
"IT'S HANGING STRAIGHT DOWN BECAUSE IT'S ADMIRING MY NEW COWBOY BOOTS!!!!!"
To which Margaret replies..."Shoulda bought a hat, Bert. Shoulda
bought a hat