user
Given a cartoon image and a caption. Caption: They're trying to attract a younger crowd. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
The jockeys are riding a common children's toy: the "hobby horse". The joke is that this particular race track switched from the real horses to the toy horses as a marketing ploy so that they could attract younger fans to watch the races. It's funny in part because it's not clear why a race track, who relies on gambling, would want to attract children with no access to money as customers.