Loan-a Lisa

Mark Zuckerberg
Chris Hansen
Muhammad Yunus

"Loan-a Lisa" is the second episode of The Simpsons' twenty-second season. It originally aired on the Fox network in the United States on October 3, 2010. In the episode, Lisa helps fund Nelson's bicycle company with money Grampa Simpson gives her as part of his inheritance, but after Nelson meets Facebook founder Mark Zuckerberg and is convinced he can be successful by dropping out of school, Lisa tries to convince Nelson to stay in school. Meanwhile, Homer gets addicted to buying expensive items and returning them.

The episode was written by Valentina L. Garza and directed by Matthew Faughnan, after Yeardley Smith suggested writing one centered around microfinancing. It guest starred Mark Zuckerberg, Chris Hansen and Muhammad Yunus. The episode received positive reviews from critics. According to the Nielsen Media Research receiving a 4.1/11 in the 18-49 demographic going up from the previous episode both in the demographic and in total viewers. The episode was broadcast two days after the theatrical release of The Social Network, a film based on Zuckerberg's founding of Facebook.

Grampa decides to give his family their inheritance now, rather than make them wait until after his death. Each person's share turns out to be $50, and they decide to spend it at Costington's. Bart pays Gil Gunderson to walk up the down escalator, while Marge picks out a purse but mis-reads its $500 price tag as $50. Pressure from other shoppers leads her to charge it to her credit card; though she cannot afford it, Homer suggests that she use it until the store's return period is about to expire, then take it back. During dinner at a fancy restaurant, Marge tries her best to keep the purse clean, but Homer ruins it by dropping shrimp sauce on it. She is still able to return the purse despite this damage, and Homer begins buying expensive items on credit and returning them in time for a refund. Homer is eventually caught doing so on camera by Chris Hansen in a special entitled To Catch a Credit Whore, forcing Homer to flee in shame (but not before signing a contract authorizing use of his image for TV).