user
Given a cartoon image and a caption. Caption: I can’t skip. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
A reference to the Wizard of Oz --- in that story, the group of protagonists often skip down the yellow brick road. But, this potential fifth character (the sailor with the peg leg) was rejected by the party because he is physically unable skip due to his leg. It's a petty reason for the party to pass him over.