+2 can also be used as + 3 or any other number, and is used as a joke refering to mostly Role-Playing Games, or
RPGs itself. In
RPGs a Player can obtain items that add bonuses to stats the player has. So if the player has a weapon, lets say a sword, it can be known as a +5 Sword, adding 5 to the stats it is reffering to (+5). On a more real scale it is mostly used in real world items for either playing around, or if your a real
1337 you might be serious about it.
