I heard this song when I was a kid on the MUPPETS and I would run around saying Mahna Mahna and everyone thought I was stupid, because I guess no one heard it? And then later in life I saw this commercial and fell out of my chair.
Dr.Pepper .. Mahna Mahna -- 'Phenomena' -- Muppets and also CAKE does a version
Diet Cherry Vanilla Dr. Pepper commercial - YouTube
and here's the MUPPET version
Muppet Show - Mahna Mahna...m HD 720p bacco... Original! - YouTube
and CAKE of all people had to do it
Mahna Mahna - YouTube