A proto-Cookie Monster wanders upon a talking coffee machine that has been set in "Auto-Descriptive" Mode. As the machine describes its parts, the monster eats them. Once the machine is finished, the voice of the machine from inside the monster tells him that he has activated the anti-vandalism program, which harbors the most powerful explosives known to man. The monster instantly combusts. The version on the Ed Sullivan Show is slightly different; in this version, the machine itself is an explosive device.
Luncheon Counter Monster performed the sketch again in a 1987 Muppet Meeting Film in which he attacks yet another coffee maker, only to explode yet again.
The original film is shown in the opening sequence of The Muppets: A Celebration of 30 Years.