I'm in, with a joke:
A group of blondes walk into a club in a celebratory mood. They have party hats and shirts adorned with the number 43, and they constantly cheer "43 days! 43 days!" and start the festivities by ordering 43 shots of high-end tequila. The waitress brings the trays over and says "You girls are obviously celebrating. May I ask what the occasion is?"
"The box said 6 to 8 years," one blonde chirps happily. "But we finished the puzzle in 43 days!"