Hard Relationship Moments
A couple argues; one insults the other's sense of direction using graph theory (every complete graph has a Hamiltonian cycle).
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-02-13-hard-relationship-moments/ (CC BY-NC 4.0)Transcript
A: "What are you saying? You don't trust my sense of direction?"
B: "Don't trust it?! You couldn't find a Hamiltonian cycle in a complete graph!"
[Caption] "Hard Moments in a Mathematical Relationship"