A doctor used to visit the same bar every day and order the same drink day in and day out.

"Fix me an almond Daquiri, Dick!" the doctor would say.

"Coming right up!" the bartender would reply.

This was the way it went for years on end. Finally one day, the bartender realized there were no more almonds anywhere in his inventory, and his customer was waiting anxiously at the bar for his favorite beverage.

In a hurry, he figured that he could use a hickory nut, crush it up, the man would never know the difference.

Well, the doctor took a sip of the drink and said "Is this an almond Daquiri, Dick?"

"Well, no, it's a hickory Daquiri, Doc."