It was almost Bart's birthday, but Homer didn't know what to get him, until he saw the Superstar Celebrity Microphone advertised on TV, became enthralled with it, and decided to order one for Bart, who was less than enthusiastic about the microphone, not even taking it out of the box, but instead using it to prop his window open. When Homer saw this, he got the microphone out and demonstrated it, singing off-key and talking loudly, which made Lisa cover her ears, elicited howls from Santa's Little Helper, and confused Marge because the feedback and distortion made it impossible to understand Homer. Bart was disappointed in Homer's demonstration, and Homer was even more disappointed, thinking that the microphone gift was a complete flop.
However, Marge got an idea: She also tried using the microphone, speaking in a much quieter voice, and Bart was impressed with the results, even though Marge was surprised at how she sounded. Bart then played a series of pranks with the microphone, thoroughly enjoying it until the last one backfired.
Bart played the following pranks with the Superstar Celebrity Microphone:
- Making Homer think that Martians had invaded Earth. (Homer first got mad, then was touched when he realized that Bart actually enjoyed the gift.)
- Eavesdropping on Lisa's conversation with one of her friends by placing the microphone under her bed and listening to the radio in another room.
- Placing a radio under Mrs. Krabappel's chair and making farting noises when she sat down.
- Posing as God for the benefit of Rod and Todd Flanders (Bart saw them listening to the radio and went into action): Making Rod attempt to walk through the wall and making both of them take all the cookies from their kitchen and leave them on the Simpsons' porch.
- Placing a radio down an old well near Springfield Elementary School to make Groundskeeper Willie (and, as it turned out, the whole town) think that a little boy named Timmy O'Toole had fallen into the well. The prank backfired when Bart figured he was about to be caught. He realized that he had put his name on the radio, so he attempted to retrieve it, but actually ended up falling into the well.
Behind the laughter
- The Superstar Celebrity Microphone and its TV ad are parodies of Ronco's "Mr. Microphone" and its advertising, often seen on TV during the 1970s.