If you're going to see Rihanna in concert on her current 'Diamonds' world tour, take our advice and don't get too hands-on with the singer or you could end up getting clobbered.
That's exactly what happened to one over-excited fan during Ri-Ri's recent show in Birmingham.
The singer got up close and personal with the crowd as she belted out her hit 'We Found Love' but one fan took the opportunity to grab the star and, after they refused to let go, Rihanna smacked the unidentified individual with her mic. In the face.
And don't go thinking it was an accident either. One fan later tweeted: "[Rihanna] just hit someone with her mic on accident haha oops."
To which Rihanna replied: "Purpose! That bitch won't let me go."
Two words: Don't mess.
Watch a fan-recorded video of the incident above.
We always wondered how Cheryl managed to sing so perfectly whilst throwing some serious shapes to her No.1 single 'Call My Name'. Now, thanks to her performance on 'Stand Up To Cancer', we know.
Jessica Simpson's little sis, Ashlee, didn't even pretend to mime along to her hit 'Pieces Of Me' on Saturday Night Live back in 2004. She just did it a little jig instead to try and distract us from the fact that she was going to mime along to her single. Yeah, that's do it, Ash.
Britney made hardly any attempt to hide the fact she was miming when she appeared on 'The X Factor' to perform 'Womanizer' in 2010. As if her out-of-time lip movements weren't enough, Dermot O'Learly gave the game away by handing Brit a mic to talk into after the performance. D'oh!
Mariah forgot to put her mic to her mouth in time for her big screechy note when she appearing on 'Ant & Dec's Saturday Night Takeaway'. Ooops!
All About Eve
We can't remember any of All About Eve's songs but we DO remember sitting down to watch Top of the Pops back in the day and seeing Julianne Regan and Tim Bricheno sitting there like lemons as their single 'Martha's Harbour' played but they failed to hear it. Despite the epic live telly fail, the single climbed the charts for the next two weeks!
If the acting work ever dries up for Li-Lo (which can't be that far off) you'd think she'd have her music *ahem* career to fall back on but she's going to need to brush up on her lip-synching skills first.
Cheryl Cole (again)
She may have prepared a backing track with live vocals recorded over the top, but Cheryl was fooling no one when she performed 'Fight For This Love' on 'The X Factor' in 2010.
Katy Perry: Singer, songwriter, dancer... recorder player? Errrm, no.
The 'X Factor' contestants
The 'X Factor' contestants have long made us cringe with their dreadful mimed group performances, but this particular rendition from 2011 had our toes extra curled.
Beyonce fooled us all with her rendition of 'The Star Spangled Banner' at President Obama's inauguration. And she would have got away with it if it wasn't for some pesky kids who outed her as having mimed.
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