Originating (presumably) on the World of Warcraft forums, this is an essentially derogatory concept some people employ that means that all that a certain class must do in order to achieve success in the game is to bind every key on their keyboard to one ability that is perceived to be overpowered, and then continue to roll their face across the keyboard. The notion is that this one ability is so amazingly overpowered in relation to those of other classes, all one has to do is absently spam it as much as possible (and they might as well do it with their face, because there isn't any other use for the big stupid thing on top of their shoulders).
Priest: waah waah I'm a little bitch
Warrior: Oh stfu -
1) bind every key on your keyboard to Flash Heal
A skilless form of "art" in which people carelessly slap shitty brushstrokes and color together in a random fashion. Abstract expressionists would have you believe that there is some sort of deeper meaning to their "paintings" than just a ridiculous decadence of actual art (which there isn't).
People like Jackson Pollock and Hans Hofmann grew rich off of people who have no actual understanding of art through the use of abstract expressionism in their paintings.