Every weekday, at exactly 5:03 p.m., Dr. Kendall would go to the pub next to his office. His practice done for the day, he would relax with a hazelnut daiquiri, which was the pub's specialty. He had done this, for so many years, so consistently, that Zach, the bartender, would have it ready for him when he arrived.
Imagine Zach's horror, one day, to discover that the few hazelnuts he had were rotted! As it was approaching 4:55, he had no time to go get new hazelnuts, but he did find some hickory nuts that were suitable for use.
When Dr. Kendall arrived, and sipped his drink, he made eye contact with Zach, and said, 'Something's different about this drink.
Zach blushed, and replied, yes sir, there is. We ran out of hazelnuts... so this... is a... hickory daiquiri, Doc.