"Teletubbies" makes as much sense to toddlers as anything else. In real life you get certain foods only in the morning, you have to put on clothes, you get dropped off at day care and then picked up later. On TV the sun has a baby's face, a vacuum cleaner eats toast, and when the windmill spins it's time to come a-runnin'. It's all equally arbitrary.
A reliable explanation of the science behind the Teletubbies can be found here:
Anyway, I award this video the very rare and coveted one-star.
That's some very interesting insight into the mind of an infant, as well as a helpful explication of an otherwise confounding chidlren's program that you have managed to produce for us strangers here on the internet.