user
Given a cartoon image and a caption. Caption: Well, if it isn't the Gym Reaper. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
A play on the term "grim reaper" --- who is an iconic character with robes and a scythe representing death. Here, "gym" sounds like "grim", and the "gym reaper" at the door has similar characteristics to the grim reaper (sythe, robes), but is dressed in workout clothing like tennis shoes and sweat pants that one might wear at a gym.