Warrior: Oh stfu -
1) bind every key on your keyboard to Flash Heal
In those situations, you, the alleged simpleton, would then keybind your entire keyboard to one or two abilities, carefully place left cheekbone on the W key, and while maintaining consistent pressure between your face and keyboard, roll your lips, nose, right cheekbone to about the L key, and then backwards to the W key, and then repeat.
a faceroll is when playing a video game, to use one's face on the keyboard to play the game instead of using one's hands.
(See alternate definition for etymology relating to World of Warcraft and one very specific meaning.)
This is a hyperbolic, humorous term used to imply that certain kinds of play are overpowered (i.e. unfair), very easy (again in contrast to others), or are marked by being devoid of any strategy. That is to say, you can play the game successfully (1) without looking at the screen and (2) by hitting random keys (with your face.)
The term faceroll can be used as generally derogatory or inflammatory, as it is essentially a personal attack devaluing the video game developers's judgment.
Evolution of the use of the term into gamer lexicon demonstrates the term can simply be used humorously as an absurdity (to alleviate tension rather than create an indictment.)
"I played a Paladin once. I started playing, and then rolled my face over the keyboard. When I looked up, I was in Outland."
(This comment suggests that 1/3 of the game content can be completed using a Paladin character in one faceroll. This comment is witty and humorous as an absurdity, because it would take ~50-60 hours of play time to complete this task.)
"We don't need to use crowd control in this dungeon. We can just faceroll it."
(This player is arguing that the dungeon is so easy, the group doesn't need to pay attention to what they are doing.)
The term 'face roll' suggests that the person doing the 'face rolling' can beat their opponent by just 'rolling' their face along the keyboard, defeating their foe almost effortlessly.
B. "Face roll" can also be used a derogatory term, used when insulting another person's poor skills, or lack there of, when using their MMO RPG character.
The derogatory "face roll" term suggests the player used no skill what-so-ever and simply rolled their face along the keyboard.
B. Player: Wtf was that dude? Did you just face roll that last boss or what? We wiped because of you asshole.
Pally: No you didn't, you barely won.
Druid: No kid, FaceRolled as in a team of boomkins