Oompa loompa doompadee doo

Oompa loompa doompadee doo I've got another puzzle for you Oompa loompa doompadah dee If you are wise you'll listen to me

“Oh yeah, the Oompa Loompas,” says Adam Harris in the Bournville inventing room or, as Cadbury prefers to call it, the “development kitchen”. “You’ve got no idea how many times I’ve been called an Oompa Loompa. I don’t really mind, because it’s quite funny. We were actually all singing the Oompa Loompa song before you came in here today. But we had to stop because it really does your head in after a while.”