(Strip Number 4216, Original Publication Date, 6 September 1982)
Panel 1: We pick up where we left off Saturday as John tells Mike that it's up to him to do all his homework pages and do them well; a harmless enough statement because it's the truth.
Panel 2: He then sets himself up to get a stupid comment in return by trying to get Mike to see too big a picture when he says that it's more than just homework, it's preparing him for the responsible life of an adult.
Panel 3: Mike says "It is??"
Panel 4: He then declares that he'll remain seven forever.
Summary: This is because John and Elly aren't very good salesmen for adulthood because they don't seem to laugh or smile or know how to enjoy themselves; this is what they get for their fearfully hiding their sense of humor from their children.