A person who doesn't know what the actual fuck is going on and lacks the basic knowledge of movement, tactics and aim. Often part of the PC master race.
Someone: "That kid Gustav sure is one hell of a bot"
Someone else: "Tell me about it, gets clapped on the daily but console players and mobile even"
Someone (again): "He's just as bad as his twin sister Sidd, I almost feel bad for them.... almost"