What global McDonald's tagline, introduced in 2003, is written as “I'm lovin' it”?

McDonald's introduced “I'm Lovin' It” as a global tagline in 2003.

The phrase became the central verbal element of a worldwide branding campaign and was paired with the familiar “ba da ba ba ba” musical motif. Unlike many earlier McDonald's slogans that were strongly tied to particular national advertising periods, “I'm Lovin' It” was designed for broad international use and was adapted into local-language advertising around the world.

The campaign is often discussed because it used a pop-oriented style and a short, conversational phrase rather than a formal product claim. The tagline is still closely identified with McDonald's branding, although individual markets may use additional local messages.

It should not be confused with “You Deserve a Break Today,” the famous slogan from the 1970s. The two lines belong to separate eras and reflect different advertising styles: one emphasized taking a break, while the later line emphasized personal enjoyment.