[TOMT] [MOVIE] [1980s-1990s], Kids Film about learning to be funny

Thinking of a film or tv movie for kids that I watched in my childhood. It has a game show or escape room type element to it. There are a small number of human actors. All I remember is near the end they solve a final “stage” of their ordeal, then go down a long hallway not knowing where it leads, and end up on a physical stage under stage lights where they give a stand up comedy show. Might have been clown noses or bad knock knock jokes in the show, but I’m not sure if I’m combining another memory. There might have been a “following the rabbit” element.