One of my favourite exchanges in The Sun Also Rises, by Ernest Hemingway:
"Here's a taxidermist's," Bill said. "Want to buy anything? Nice stuffed dog?"
"Come on," I said. "You're pie-eyed."
"Pretty nice stuffed dogs," Bill said. "Certainly brighten up your flat."
"Just one stuffed dog. I can take 'em or leave 'em alone. But listen, Jake. Just one stuffed dog."
"Mean everything in the world to you after you bought it. Simple exchange of values. You give them money. They give you a stuffed dog."
"We'll get one on the way back."
"All right. Have it your way. Road to hell paved with unbought stuffed dogs. Not my fault."