user
Given a cartoon image and a caption. Caption: You always get like this when there's a full Earth. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
Odd/scary behaviors are said to occur during a full moon; in this case, the "full earth" out the window either implies that these people live in a space house, or that the house occasionally jumps into orbit. The contrast between the man's nonchalance and the woman's lucidity about the absurdity of being in space is humorous.