The phrase 'All Hail Pizza' is linked to DoubleDougs on Twitch, where it appears as a channel meme celebrating pizza moments during streams. According to the published notes for this clip, the sound comes from that Twitch community rather than a film, show or viral song. Like many streamer-born catchphrases, it spread through clips, chat jokes and reuploads as viewers reused the chant for their own food videos. It endures because the wording is simple, repeatable and instantly funny, giving creators a ready-made hype line for anything pizza-related.