Have you ever played The Floor is Lava game? The rules are rather simple. Whenever somebody says or texts you, "the floor is lava," you have to jump onto a piece of furniture, playground equipment, etc. so as to not get burned. This Floor is Lava shirt will remind others of the popular game. In reality, if the floor was actually lava, the air above it would be too hot for a human to survive for more than a few seconds, making the game impossible to play, or at least win without dying.