“Gyatt for Rizzmas” is an internet parody riff on the title phrase of “All I Want for Christmas Is You,” the well-known holiday pop song that returns online every Christmas season. This version leans on slang like “gyatt” and “rizz,” which became widespread in meme culture and short-form video posts. The joke spread because it blends a universally recognized Christmas reference with current internet vocabulary. Creators still use it in seasonal edits when they want something festive, silly, and instantly recognizable.