...of a blonde joke.

There were three blondes at a cocktail lounge toasting to "51 days!"
One of the blondes asked for another round and said, "Here's to 51 days!"
They did this numerous times and finally the bartender asked, "I don't get it. Why are you toasting to 51 days?"
One of the blondes explained, "Well you see, we bought this puzzle, and on the box it said 2 to 3 years, but we finished it in only 51 days!!"

He he he.