Sheldon buys a bunch of cats to cope with his break-up with Amy. He must pay $20 to get people to take his cats.

Howard brings his girlfriend over to Leonard and Sheldon's apartment unannounced.

Sheldon realizes that each additional joke is just as funny as the previous ones.

Stringer Bell learns about product elasticity and then explains it to the gangsters he is in business with.

Harold, a tax auditor, visits Miss Pascal at her store to audit her because she paid only 78% of her taxes for the year. She gives him a hard time and states that she intentionally did not pay taxes for spending that she does not support. Miss Pascal mentions some ways that the government spends taxes.