I always thought it was a reference to valuable stuff picked from trash, which I understood to be slang from sanitation workers, but apparently that's local to the NYC area.
I don't know about other languages, but in German "Mongo" is pretty much a forbidden word as it is derogative descriptor for people with down syndrom and other visible defects, especially movement defects.
I don't know about other languages, but in German "Mongo" is pretty much a forbidden word as it is derogative descriptor for people with down syndrom and other visible defects, especially movement defects.
In the UK that would be "mong", for us Mongo is the planet Ming The Merciless is from.