It comes with a matching bottom that also has a set of boot covers on the bottom.
Maybe he accidentally ate a time bomb and doesn’t know that he’s about to explode when he runs up to you. Finally, the headpiece puts the finishing touch to this outfit, since it’s shaped like a box and has the Creeper’s face designed into the front of it. Maybe he’s just so excited about that house you built, that he can’t contain himself, which results in an explosion.