The hook comes from McDonald's I'm Lovin' It campaign, launched internationally in 2003 and built around the sung ba da ba ba ba mnemonic. The short melody became one of the most recognised advertising jingles in the world and stayed attached to the brand long after the first adverts aired. Online, cleaner and remixed versions like this one spread through meme edits and soundboards, where creators reuse the tune as instant shorthand for burgers, fries and fast food culture in general.