F1 pusher

The term "F1 pusher" originated from the Space MMO 'Eve Online'. It describes a skill-less player that can only press the F1 key (which generally triggers the guns) when the Fleet Commander tells him to.

He supposedly has no understanding of actual game-mechanics and is therefor unable to make decisions of his own.

One skilled player insulting another player: " You are so shit man, you F1 pusher."

After someone get's blown up, tell him: "Stick to pressing F1, noob."