Five men walk into a bar and one of them says to the bartender, “A round of drinks for me and my friends.”
They get their drinks and raise their glasses for a toast, “To 51 days!” and they drink.
One of the men asks the bartender to set them up with another round.
Again the men toast, “To 51 days!” and they drink.
After they order a third round, the bartender asks what the toast means.
One of the men answers, “We just finished a jigsaw puzzle. On the box it said, ‘two to four years’ and we finished it in 51 days!”