Every day, at 5 PM, a doctor stopped at his local tavern and ordered up a Frangelico on crushed ice.
One night, the bartender realized that he was out of the liquor, and so he improvised with a cheap hickory flavored liquor to replace the doctor's hazelnut flavored favorite.
He handed it to the doctor, who tasted it and immediately spit it back into the glass.
"What on earth is this you're trying to poison me with?", asked the incredulous general practitioner.
Replied the barkeep, "It's a Hickory Dacari, Doc."