Condition inexperienced drivers suffer from when they start driving. It's a combination of inexperience and nervousness which leads then punching the pedals like in Xbox instead of gently brushing them like in real life.
A google translate joke started by my friend, alternatively フットヘビーケーキ!!. This was supposed to say "UR just bad." This word is a synonym to "Git Gud," or "You're (just) bad."