In Mario Kart: Double Dash, all of a driver's animations are saved in a single file, individual segments of which are being played back at all times. If the entire file is being played back as-is, the driver appears to do a dance due to how the animations are ordered.
I generally don’t enjoy any government agency doing 2014 style brand tweets but I’ll tolerate the Post Office or National Parks doing it. I’m not going to accept it from the room temperature IQ molestation squadron