Code 100 is a code which is said to staff and employees over a talloy at a shop to inform the staff and employees that a shop lifter has entered or are acting suspicious.
Its usually heard in stores like primark and H&M also in uk stores such as wilkinsons.
Over the talloy: "code 100 in aisles 3 and 7"
A security man or memeber of staffwill therefore go to aisles 3 or 7 to watch over the person they have suspicions of.
A mile-stone in leveling up in certain video games. Only hardcore and/or obsessive players can reach level 100 unless they cheat/hack. In some games, like Pokemon, level 100 is the final level.
Gamer: Holy crap! I reached level 100!!! Party at my place!