Divided by zero
From lurkmore wiki
A meme based off of the fact that dividing by zero is impossible (and causes an error on pretty much every computer there is). Dividing by Zero is said to have dire consequences, such as opening black holes. Seen as "I DIVIDED BY ZERO OH SHI-". Also, in FlyFF (Fly for Fun), if you use the ingame calculator (Trade/Shop window) and divide by zero, the game will crash. Try dividing by zero on Windows' calculator!