A Blond runs into a crowded bar

A blond runs into a crowded bar shouting to everybody "26 days! 26 days! Drinks on me!"

The patrons at the bar all cheer for the blond and the bartender pours everybody a drink. A few minutes later the blond again shouts "26 days! 26 days! Drinks on me!". Again, cheering is heard by everybody at the bar and the bartender pours everybody their second free drink.

Once again after a few minutes the blond starts with the shouting "26 days! 26 days! Drinks on me!"

At this point the bartender is beyond curious about what 26 days means, and he's also very concerned that the blond won't be able to afford 3 rounds of drinks for this crowded bar. So he decides he had better ask her what she means before he pours another round for the entire bar.

Bartender - "Ma'am, I'm dying to know. What does 26 days mean? And why are you buying rounds of drinks to celebrate it?"

Blond - "Tonight is a night of wonder and celebration! I finished a puzzle tonight. On the box it said 3 years and up, but I finished it in 26 days!"