“I'm lovin' it” was the name of McDonald's first international advertising campaign created for multiple countries in 2003. The campaign introduced a common global phrase and a musical identity that could be adapted across markets.
McDonald's launched the campaign in Munich in September 2003. Its central line was written in a conversational style rather than as a traditional product claim, making it usable in many languages and advertising formats.
The campaign became closely associated with the “ba da ba ba ba” musical mnemonic and was supported by television, print, digital, and in-restaurant materials. McDonald's continued using the line as a major part of its global brand identity.
This campaign is distinct from earlier American slogans such as “You Deserve a Break Today” and “We Love to See You Smile.” Those phrases belonged to earlier eras and were not the 2003 worldwide platform.