Reality program: Hellholes, where contestants on a rapidly diminishing floor compete to see who can be the last one left alive while performing mental and physical challenges

When people say that something “fell between the cracks” my mind rebels. Surely if a floor were cracked in certain places, the best place for something to fall would be in between the cracks, because that way the thing would not fall into a crack itself. One could say something “fell into a crack” or “fell into a space between the parts which are between the cracks.”