A group of blondes walk into a bar screaming 51 
days, they order a round of drinks still 
screaming 51 days, the bartender wants to know
what the 51 days is all about but just can't ask.

A while later after many drinks the blondes are
still screaming 51 days so the bartender decides
he has to ask, as he delivers the next round to 
the ladies he says "Ladies I have to know what's
the 51 days about?" 

The blondes replied "We had a puzzle and on the 
box it said 2-5 years and we did it in 51 days" 

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