Two guys were in a bar partying like fools.  They were drinking boiler
 makers, buying rounds & yee hawin' !  When asked why the celebration,
 they boasted that they just finished a  jigsaw puzzle & it only took
 them 2 months!

 "TWO MONTHS?!" cried the bartender.  "That's ridiculous. It shouldn't
  take that long!!"

 "Oh yeah?" says one guy. "The box said 2 - 4 YEARS!