"Why So Serious" is a custom design concept for Nike Air Force 1 sneakers inspired by the iconic phrase from the Batman franchise. This design encapsulates the enigmatic and intriguing essence of the Joker, a character known for his unpredictability and dark humor.

The sneakers feature a predominantly black colorway to reflect the Joker's mysterious and sinister persona. The upper is adorned with intricate details, including hand-painted Joker-inspired motifs such as his signature smile, playing cards, and the phrase "Why So Serious" prominently displayed across the shoes.