Because the box said 2-4 years!
They always finish last.
I'm two tiered. I came up with this at 1am, enjoy.
They think outside the box.
GLOVES! Just kidding, he hasn't opened the box yet.
They say "We finished this puzzle in only 6 months! And the box says from 2 to 4 years!"
The blonde replies, "I completed the puzzle in 65 days! The box said 2 to 4 years!"