Twice

From Encyclopedia Dramatica

Twice is defined as once more than once and once less than thrice (also called "three times"). If you've done something twice you're either a big fan of it or just really stupid.

Twice can also be used as an intensifier for threats, especially if you're an Internet tough guy: "Listen, asshole, if you cross me again I'll kill you - twice."

[edit] What has happened Twice

Plane crashes to the World Trade Center
The coming of Jesus
Ninja Gaiden
Two
The number of times I masturbate each day
The number of times I actually masturbate each hour
The number of times a Jew was actually killed during the holocaust according to Iran's president
The amount of regular fun you can have whilst having sex with identical twins
The proportional size of your virtual-nads whilst acting like an internet tough guy
The size your penis would be if you were an average, healthy male
The amount of generic sweet semi-gelatinous filling inside your double-stuffed Oreo, you fat fuck.
The World War
Noobs being Pwned
random hobos fucking your mother in every hole.

[edit] Alternative Uses

Twice has also been used as a descriptor for a frozen tampon. The name comes from the words TWat and ICE. "It was so hot outside today I had to stuff a twice up my axe wound."

TWICE is also an acronym for "TWO WOMEN IN CONSTANT ECSTACY". Mmmm, sappho porn...