What is fat usopp?

Fat Usopp is a fan theory that suggests Usopp from the anime and manga series, One Piece, will gain a significant amount of weight in the future. This theory is based on several instances throughout the series where Usopp shows a love for food, especially when it comes to meat. Additionally, his lack of physical exercise and training compared to his fellow crewmates has led some fans to speculate that he might gain weight over time. However, this fan theory remains unconfirmed and purely speculative.