The Simpsons Season 22 Episode 2 (10/03/10)
When grampa gives everyone their inheritance early, Lisa uses her $50 to give a micro loan to a local business: Nelson's bike shop. Once Nelson becomes successful, he drops out of school, and Lisa seeks advice from other successful entrepreneurs including Mark Zuckerberg to keep Nelson in school. When she finds out they all dropped out, it was Nelson's inability to read the glue he used was water solvent that sends him back to school.
Meanwhile, Homer and Marge become addicted to buying things they can't afford and then returning them.