Episode Title:
The Last Laugh.
Episode Description:
After being invited to Cheese Sandwich's prank factory, Pinkie Pie takes the opportunity to discuss her purpose in life with him, dismayed that most of her friends are moving on. Upon her arrival, however, Cheese and his overly formal assistant, Sans Smirk, explain that Cheese has become unable to laugh ever since the two started the factory to satisfy widespread demand for his novelties. Pinkie devises modifications to several of Cheese's pranks, but none of them make him laugh. She eventually realizes that he needs to see ponies laugh in person, and he regains his cheerful spirit after leading Sans and the employees in a factory-wide round of jokes. Cheese takes up his old role of a traveling party planner, leaving Sans in charge of the factory and promising to send back ideas for new products, and Pinkie returns to Ponyville with a new understanding of her purpose to make others happy.
