I used to work in a factory that made hygiene related products and we all used to sort of compete to see who could load certain machines the fastest or box product the quickest. It made the dull 12 hour night shifts go by a little faster if you had some fun. Mind you there were only 2 or 3 fats on a crew of 20ish people (this was 13 years ago) and they barely worked, nevermind getting involved in our game.