EFG stands for Epic Fail Guy. He is a meme on the website 4chan. He is usually represented as a stick figure wearing a Guy Fawkes mask, and never does anything right. Combo? Fail. Meme? Fail. Comment? Joke? All fail. He can't even shoop a decent whoop.
EFG: LETS!
EFG: GET!
EFG: READY!
EFG: TO!
anonymous: fail.