A sendup of Oompa Loompas found on
20th 30th Century Fox's Futurama, the episode being "Fry and the Slurm Factory" - the last episode of Series 1 (where Fry finds the Golden Bottlecap and wins a tour of the factory where Slurm (Futurama's answer to Coke) is made). These little creatures have orange skins, green hair and bad fashion sense (blue and white stripey overalls).
One thing the little orange slaves do like doing, though, is reminding people (in a friendly way) not to ask anyone about the secret ingredient of Slurm... otherwise they might suffer a fate worse than knowledge. Par exemplum:
Grunka, Lunka, dunkitty doo,
We've got a friendly warning for you,
Grunka, Lunka, dunkitty dasis,
The secret of Slurm's on a need-to-know basis.
Asking questions in school is a great way to learn,
If you try that stuff here you might get your legs broke.
We once found a dead guy face-down in the Slurm,
It could easily happen again to you folks.
So keep your heads down, and keep your mouths shut,
Grunka, Lunka, Lunka, dunkitty dut.
This was the song sung to the Planet Express crew after they became a little too curious about the secret ingredient. It seemed to be an extremely secret ingredient, because the little men had used up their bathroom break. After the singing, they showed up once more to warn the crew again, then they left. Grunka Lunkas are strange creatures.