Concertgoers seem to be extra grabby these days, and some stars are fighting back -- literally!

If you remember last month, Beyonce kicked a fan out of her show in Denmark after he grabbed her bootylicious behind.

We all know that Rihanna is a little more badass (poor choice of words?), so when a fan wouldn't let go of her arm as she walked through the audience at a concert in the U.K. on Tuesday, she did what any slightly irrational totally normal pop star would do, and promptly bashed them over the head with her microphone before moving on.

After a fan tweeted that RiRi had hit a fan by accident, Rihanna reportedly tweeted back, 'Purpose! That bitch won't let me go.' The tweet was later deleted.

Note to self: don't mess with Rihanna.

Was this over the top, or was she justified when the fan wouldn't let go? Tell us what you think in the comment section below!