user
Given a cartoon image and a caption. Caption: Technically, I'm guarding two posts. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
A play on words: to guard a "post" usually means to patrol a location, but here, the guard in the hammock is just relaxing and not working. However, in another sense he is guarding the two literal posts his hammock is attached to, which he argues means that he's technically doing twice the expected work.