Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

The Joke

A game of tag takes a dark philosophical turn. One child tags another and says "Tag! You're it!" but the tagged child launches into a nihilistic monologue: there is no objective meaning, it exists only in the minds of those who accept it, the rules of the game are conventions of subjective observers, and personal senses of justice, beauty, hope, and love are similarly constructed. The child then declares the other is "a volcanic island in a deep sea -- barren, shallow, alone, and temporary." Finally, the philosophical child says "Tag. You've got ennui." The caption says "No tagbacks."

The Humor

The humor comes from the absurd juxtaposition of a simple children's game (tag) with heavy existentialist and nihilist philosophy. Instead of just tagging someone and running away, the child delivers a devastating philosophical lecture that deconstructs meaning itself. The punchline reframes the game: instead of tagging someone as "it," the child has tagged them with "ennui" -- a deep existential boredom and weariness of life. The "no tagbacks" rule means the victim cannot return this existential crisis to its sender. It parodies how exposure to nihilistic philosophy can feel like an unwanted burden imposed on you by someone else.

References

• Ennui: A French word meaning a feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement, often used in existentialist philosophy.
• Social constructionism: The philosophical position that meaning, rules, and values are constructed by subjective human agreement rather than existing objectively.