user
Given a cartoon image and a caption. Caption: I told my ex I'll take her back if she drops some weight. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
A play on the words "drops some weight" --- figuratively, to drop weight usually refers to go on a diet; this man has apparently broken up with his partner because she is too fat. But, she takes ironic revenge in the form of her literally dropping a weight, i.e., a cinderblock, on his head.