The Normal Difficulty Face, colloquially known as the 'Green Smiley' or 'Lobotomy Face,' originates from Robert Topala's rhythm game, Geometry Dash. Originally designed to categorize level difficulty, this specific icon became an internet sensation in late 2023 following the 2.2 update. It is the face of the 'Lobotomy Dash' meme trend, characterized by surreal, nonsensical level designs and the repetitive 'Fire in the hole!' sound effect. The meme's popularity stems from its blank, slightly haunting expression, which creators use to represent everything from absolute brain-rot humor to ironic simplicity within the gaming world.