That will happen - is happening - when their economies collapse and domestic prices and wages fall through the floor.

BBC: Plan B for the eurozone?

Assuming, that is, that America doesn't fall through the floor.

ECONOMIST: Buttonwood

So I am looking for strong fundamentals in a bearish market, because even if the market does fall and my stock does fall, I know it is not going to fall through the floor.

FORBES: 4 Tips That Put Volatility to Work

The euro rose in value, around the time the rate decision was announced, only to fall through the floor later on during the ECB President's press conference, falling 0.7% against the dollar in not very much time at all.

BBC: ECB takes (a little) action

Officer Yaslowitz collapsed and Marshal Ley was subsequent shot twice, causing him to fall through the attic opening onto the floor below.

WHITEHOUSE: Background on Medal of Valor Ceremony

He had the sensation of a great type of hole or emptiness falling through him and continuing to fall and never hitting the floor.

NEWYORKER: Wiggle Room