If there’s one thing we’ve learned from this Britney Spears clip, it’s not to heckle the star on stage!

Footage has emerged of Spears performing at Planet Hollywood Hotel & Casino in Las Vegas during one of her'Part Of Me' residency shows, when someone in the crowd shouted out that she was a “fat b*tch”.

WARNING: CONTAINS EXPLICIT LANGUAGE

[related]Unsurprisingly, this did not go down well with the ‘Womanizer’ singer, who reacted by branding the man a “f**king asshole”, before continuing to sing ’Till The World Ends’.

Fans of the 33-year old took to Twitter to defend Brit's bad language, praising her for sticking up for herself against the hater…

YES at @britneyspears standing up for herself! Someone yelled a rude comment at her, and you can hear "fucking asshole" in her mic

— lauren (@lsparks4) April 16, 2015

I hope that the "fucking asshole" who insulted her burn to hell. @britneyspears you're flawless babe

— SODARTPOP (@itsbritneyb_tch) April 16, 2015

If you call Britney Spears fat, then your mad she called you a fucking asshole. What did you expect piece of shit

— Logan (@loganliston) April 16, 2015

So you scream fat bitch at Britney Spears at her concert, she responds by calling you a fucking asshole... and you're offended. Lmao

— caleb. (@defythetrend) April 16, 2015

Britney is set to make her comeback with Iggy Azalea collaboration ‘Pretty Girls’, which is due for release in the US on May 5.

It is currently unknown when the song will be available in the UK, but keep it MTV for more updates.