Q: What is the difference between a pirate and a cranberry farmer?
A: A pirate buries his treasure while a cranberry farmer treasures his berries!
Explanation: Cranberries are a sour fruit, related to blueberries, that are used to make cranberry sauce and cranberry juice. Because they are so sour they are not usually eaten by themselves.
Pirates are, well, pirates (think Pirates of the Caribbean).
This joke is funny because it plays with the word treasure. When used as a noun it is a thing that is very important to you, like the treasure that pirates bury. When it is a verb, you treat it with respect because of its value to you, you treasure it.
Watch the cranberry harvest here-