Prepare for some major LOLs, you guys, because Frankie Grande just put his Nickelodeon knowledge to the test! The YouTube personality stopped by J-14, where he had to finish the lyrics of some classic Nick show theme songs, and the results were hilarious. Make sure you watch the video above to see him play the game and belt out some of our favorite theme songs!

OK, so some of the theme songs he knew right away — like Victorious, SpongeBob SquarePants and All That. While other tunes — like The ThundermansDrake & Josh and Zoey 101 — slipped his mind. And want to the funniest part? He totally couldn’t remember the words to the theme song of his own sister, Ariana Grande‘s TV show — Sam & Cat! It’s OK Frankie, we still know you’re her biggest fan.

Henry Danger The Musical premieres on Saturday, July 27 at 8 pm ET on Nickelodeon.

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