Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

The comic contrasts two phases of life with a simple before-and-after structure. In the top panel, labeled "When You're Little," a mother cheerfully tells a child "Sharing is caring!" -- the classic childhood moral lesson about generosity and cooperation. In the bottom panel, labeled "When You Grow Up," the same child (now an adult, balding) watches a politician on television declaring "Sharing is impairing the economy's repairing!" -- a rhyming slogan that inverts the childhood lesson.

The humor works on multiple levels. First, there is the absurd rhyming construction that mimics the simplistic cadence of children's sayings, suggesting that political rhetoric is no more sophisticated than nursery rhymes. Second, the comic satirizes how the values taught to children (share, be kind, cooperate) are frequently contradicted by the economic and political messaging adults receive, particularly arguments against wealth redistribution, social welfare programs, or progressive taxation. The joke captures the whiplash of growing up and discovering that the moral framework you were raised with is considered naive or even harmful in adult political discourse.