Do you know the Yip-Yips from Sesame Street?

The Yip-Yips are characters on the popular children's television show Sesame Street. They are interplanetary visitors, presumed to be from the planet Mars and used to be terrified by things like clocks, telephones and computers. When frightened, they would cover their eyes with the lower part of their jaw (Wikipedia 19.08.2006). Learn more about them here.

Here my favorite video: