1) A style of flashy attire, usually chains, worn by those pretending to be gangersters of some sort in an attempt to be the largest and flashiest looking.
2) Important lyrics of a touching folk ballad I wrote one day while bored.
1) Direct examples may be found in most rap videos, although the origins of this behaviour may be traced back to the male peacock, whose large tail allowed him to attract several mates while at the same time rendering him defenseless against predators, or in the case of rappers, useless to society.
2) Bling bling bling goes the gangster,
Bang bang bang goes the gun!