"Lisa's Date with Density" is the seventh episode of the eighth season of the American animated television series The Simpsons.

Superintendent Chalmers visits Principal Skinner at Springfield Elementary School to show off his newly purchased second-hand Honda Accord, only to discover the car's hood ornament has suddenly gone missing.

Skinner orders a search of every student's locker which reveals that Nelson Muntz, the school bully, is the culprit.

As punishment, Nelson is forced to return all stolen items found in his locker to their owners and perform janitorial work with Groundskeeper Willie.

After Nelson recommends using an aid for writing musical notation to get through her punishment faster, she realizes she has developed a crush on him.

However, the influence of his friends Jimbo, Dolph and Kearney prevails when they convince him to vandalize Principal Skinner's house later that night.

After Skinner calls the police, the four boys flee; Nelson gains refuge in the Simpson house by telling Lisa that he is innocent, which she believes at first.

However, Nelson accidentally admits his involvement the next day, and Lisa gently breaks up with him after realizing that he hasn't changed at all.

[4] The medic's line "He can't hear you now; we had to pack his ears with gauze" is one of Matt Groening's favorites.