The irony of wearing a Feynman diagram t-shirt is *chef's kiss* perfect. You're desperate to explain quantum electrodynamics to someone, ANYONE, but terrified no one will ask! It's like bringing a calculus textbook to a first date—subtly screaming "I understand particle interactions at a fundamental level" while pretending you're just being casual.
For the curious non-physicists: these squiggly lines show how subatomic particles interact, essentially the autographs of the universe's tiniest celebrities. Richard Feynman invented this notation to make quantum field theory calculations less painful, and now physics students use them to make their social lives more painful instead.
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