A group of blondes walk into a bar. One of the women tells the bartender
to line up a row of drinks for all of them. The gals lift their glasses
and toast, “Here’s to 51 days!” and they proceed to down their drinks.
Once again, they tell the bartender to “line ‘em up”, and once again
they toast 51 days and down their drinks.

The bartender says, “I don’t get it. Why in the world are you toasting
51 days?”

One of the blondes explains, “We just finished a jigsaw puzzle. It had
written on the box ’2-4 years,’ but we finished it in 51 days!