"What the fuck is up Dennys?" is a memorable quote that originated from a viral video of the hardcore-punk band Live Without performing at an abandoned Dennys in 2013. The lead vocalist shouted the phrase before inducing a circle pit, and it has since become a beloved meme. The phrase has been referenced by other bands and musicians, including Blink-182, who played an unannounced show at a Dennys location in Long Beach, California, in 2023. The band played "Anthem Part 3" and even sold official Blink-182 T-shirts emblazoned with the "What the Fuck Is Up Dennys?" slogan on the back. According to a Reddit source, Blink-182 was using their Dennys visit to shoot a music video for the song "Anthem Part 3" from their new album One More Time…, which was released on October 20, 2023.