Watch: Britney Spears Pops Off on a Heckler, Calls Them a ‘F*cking A*shole’ [Video]

Britney Spears may not be the same performer she used to be, but she proved there’s still some fire left (somewhere) when she popped off on a heckler during her Las Vegas show last night.

According to reports, an audience member called her a “fat b*tch” and she wasn’t having it — she responded by calling the person a “f*cking a*shole” before kicking off  “Till The World Ends.”

Watch the moment below!