One afternoon, as the end of the work day approached, the bartender was dismayed to find that he was out of hazelnut extract. Thinking quickly, he threw together a daiquiri made with hickory nuts and set it on the bar.

The doctor came in at his regular time, took one sip of the drink and exclaimed, "This isn't a hazelnut daiquiri."

"No, I'm sorry," replied the bartender, "it's a hickory daiquiri doc."