Rihanna 'fight' at NYC nightclub goes viral [VIDEO]: Chris Brown's ex yells and threatens to throw-down with fellow 'rude' partier, 'I'll be here next Sunday b*tch!' [WATCH]

Rihanna is definitely one crazy bada$$.

MediaTakeOut.com reports that on Thursday (Dec. 19) RiRi was spotted at NYC's popular Pink Elephant nightclub. Apparently a fellow female partier got on the "Diamonds" songstress' nerves, so she totally ripped the chick apart.

This mystery girl started walking up the club steps near Rihanna and began talking reckless. Of course Chris Brown's ex didn't let that slide. RiRi (who was leaving the bar) started yelling back, and even scheduled a future beat-down. On the MTO video clip the Barbadian beauty can be heard warning, "Ima be here next Sunday, b*tch!"

The other woman still kept on talking trash (as MTO points out, mostly in Spanish) but thankfully RiRi didn't make any hostile moves. Surly she wanted to though!

If the video doesn't load below, watch the "Rihanna puts club-goer in check" clip here.

And for more footage from RiRi's night out on the town in NYC...

We wouldn't want to be on Rihanna's bad side!