Interested in Language
It's a name for a documentary film describing the events on september the 11th and insinuating that the attacks came from inside rather than outside.
It means the coins that you have in your pocket.
What does it mean in this respect??
See Loose Change (video - Wikipedia, the free encyclopedia)
I am not sure WHY it is called Loose Change 9/11 - exept that if you take out all the loose change in your pocket, there is often more than you thought was there. Just a theory . . .