Katy Perry just released a teaser for her new music video for “Last Friday Night.” In the vid, Katy plays a thirteen-year-old head-gear-wearing, mega-nerd named Kathy Beth Terry who Tweets things like “Got new summer colors on my grill. Dr. Rosenthall RAWKS!” (By “grill,” she doesn’t mean anything close to what Nelly was singing out.)

But that’s not the best part! If you look really closely, you can spot everyone’s favorite revolutionary, one Ms. Rebecca Black. This is particularly awesome because she became famous for a song called “Friday” and this video and song refers to an epic Friday. But, you know, one that’s actually epic. It’s a sneaky little meta reference!

You can catch Ms. Black partyin’, partyin’–yeah!–at about the 0:15 mark, though you’ll have to suffer through K. Perry ralphing into a roller skate first.