the-magic-was-inside-you
Explanation
The Joke
A girl tells her aunt that after winning a race, she realized the locket her aunt gave her "isn't magical." The aunt replies with the classic trope: "The magic was in you all along!" But the girl points out that fully half the girls in the race also had lockets designed to make them think "the magic was inside them all along." She protests: "They can't all win!"
The aunt then admits that the girl's locket is "actually real" magic -- the other girls all had "pink rhinestones or little silver garbage," while hers contains something genuinely supernatural. She says "yours was that goat's eye that never stops crying blood." The girl nervously says she will keep wearing it, and the aunt replies "Technically it now wears you."
The Humor
The comic starts by deconstructing the beloved children's story trope where a magical amulet turns out to be a placebo and the real lesson is self-confidence ("the magic was inside you all along"). The girl applies basic statistical reasoning: if every competitor received the same motivational trick, the "magic" cannot explain her individual success, since they cannot all win.
Having demolished the wholesome version of the trope, the comic then swerves into horror by revealing that the aunt's locket actually IS magical -- but in a deeply unsettling way. It contains a "goat's eye that never stops crying blood" and has apparently achieved some form of sentient possession over the wearer ("it now wears you"). This is a classic SMBC move: taking a heartwarming cliche, applying logic to break it, and then replacing it with something far darker and more absurd than the original.