Two Blondes in a Bar

Two blondes came into a bar, sat down, and ordered drinks. They were making merry in a serious way and it was obvious to the bartender that they were celebrating something big. His curiosity finally got the better of him and he says "I hate to be nosy, but it's obvious that you two are celebrating something big. What's the occasion?"

One blonde replies, "Well, we are just sooo proud of ourselves, because we just finished - just the two of us alone - a 50 piece jigsaw puzzle in only 3 days."

Confused, the bartender asks "What's so special about that?"

To which the other blonde says, "Are you kidding? On the box it says 3 - 5 years."