I fear this is just a joke? I'd love to have one of those, perhaps with a longer neck (more frets or 35" scale) to do the name Bigbird justice. Great idea! Gibson would be too numb-minded serious for something like that, but Epi could do it.
I loved Sesame Street. Our German English teacher ordered us to watch it when the first (undubbed) American originals (there was a German version later on) hit German TV in the early seventies.