user
Given a cartoon image and a caption. Caption: There goes my novel. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
A joke about Moby Dick; in the famous novel, the main character Ahab (represented by the seated man) is on an obsessive quest to kill a whale named Moby Dick who bit his leg off. The novel is written from the perspective of the sailor Ishmael, who is in the background talking. But here, Ahab gets a cat, and plays with it instead of obsessing over the whale. Ishmael's laments about how his plan to write the novel Moby Dick has been derailed by the cat, Ahab's new hobby.