Main Page | See live article | Alphabetical index Main Page | See live article | Alphabetical index Yip-Yips Yip Yips on Sesame Street The Yip-Yips are interplanetary visitors that used to be terrified by things like clocks, telephones and computers on Sesame Street. They are "yip-yipped" by multiple muppeteers like Jim Henson, Frank Oz and Martin P. Robinson. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.