51 days

A bartender is sitting behind the bar on a typical day, when the door bursts open and in come four exuberant Marines. They come to the bar and order 5 pitchers of beer and 10 glasses. They take the order over and sit down at a large table. The glasses are filled and they begin toasting and chanting, "51 days, 51 days, 51days!" Soon 3 more Marines arrive, take up their drinks and the chanting grows, "51 days, 51 days, 51 days!" Two more Marines arrive and their voices are joined in raising the roof, "51 days, 51 days, 51days!" Finally the tenth Marine arrives with a picture under his arm, he walks over to the table, and sets the picture in the middle and the table erupts.

Up jumps the others, they began dancing around the table, exchanging high fives, all the while chanting, " 51 days, 51 days, 51 days!" The bartender can't contain his curiosity any longer, so he walk over to the table. There in the center is a beautifully framed child's puzzle of the cookie monster. When the frenzy dies down a little bit the bartender asks, " What's all the chanting and celebration about?"

The Marine who brought the picture in pipes up, " Everyone thinks that Marines are dumb and they make fun of us. So, we decided to set the record straight. Ten of us got together, bought this puzzle and put it together. The side of the box said 2-4 years, but we put it together in 51 days."