Bear in the Big Blue House (1997)

S2E10 It's All In Your Head

Ojo decides to host Olympic games by the pond, and the excitement is contagious, particularly for Tutter, who confidently declares he'll win every single event. However, as the games progress, he discovers that being a winner isn’t about excelling at everything. When the limbo challenge begins, it becomes clear that no one can limbo lower than a mouse!