Five friends go 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 then raise their glasses to a toast of, “To 51 days!” and drink.

One of them asks the bartender to set them up again.

Again, they toast to 51 days and drink. After they order a third round, the bartender says that he has to ask what the toast means.

“We just finished a jigsaw puzzle. On the box it said, ‘two to four years’ and we finished it in 51 days,” one replies.