Ever been dancing somewhere and you're like "damn, this floor is really bouncing!"? I have. and it scared me while everyone else was diggin' it.
That's probably what happened in Houston when 50-60 people were havin a good time then suddenly fell right through the wood floors of an apartment.
The videos aren't great, but they show how insane the hole is.
They said no one was taken to the hospital for injuries which is CRAZY lucky... the chic who lives in the apartment below is of course trying to raise money for all of her things that were ruined. [Which I would assume renters insurance would typically handle?]