living fast

never wearing a condom.

Rick Ross, "never wear a rubber where i'm from they call that livin fast..."

They tend to be rockers, glamorous, rich and / or famous, with tragic deaths.

Expression meaning take lots of risks, have lots of fun, and don't suffer through old age. It is implied that the first half of the expression is what causes the second half.

Live fast die young (LFDY) is a slogan to encourage people to do what they want when the opportunity arises because tomorrow never comes. It is encouragement to take risks.

Fuck it there’s no point in caring just let life take control and live through the motions and leave it all on the table cause tomorrow never comes there’s only today

'live fast' means that you want to live live to its fullest because life doesnt wait around. wasting time isn't an option.

'die pretty' means you're always looking good. looks get you far in this shallow world, so if you've got it flaunt it. if your always pretty, you die pretty.

bad girls do it well.”
In the context of this song, M.I.A. speaks of “bad girls” in terms of empowerment, calling women across the globe to stand tall against forces that try to oppress them.