A factory in America makes Tickle Me Elmo toys and the toy laughs when you tickle it under the arm.
A new line worker is hired and she reports for her first shift promptly at 08:00.
The next morning at 08:45, there is a knock at the Personnel officer's door and the foreman from the assembly line throws open the door and begins to rant about the new employee. He complains that she is incredibly slow and the whole assembly line is backing up fast.
The Personnel manager decides to see for himself so they march together down to the factory floor. Rightly enough, when they get down there the line is so backed up there are Tickle Me Elmos all over the floor and at the end of the line the new employee is surrounded by Tickle Me Elmos. She has a roll of plush red fabric and a huge bag of small marbles. The two men watch in amazement as she cuts a little piece of fabric, wraps it around two marble and begins to carefully sew the little package between Elmo's legs.
The Personnel manager bursts in to laughter when he sees this but after a short while pulls himself together and approaches the woman.
"I'm sorry", he says to her, barely able to keep a straight face, "but I think you may have mis-understood the instructions I gave you yesterday".
"Your job is to give Elmo two test tickles"......