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John thinks it started as just a way to piss Sherlock off, but he was actually rather a fan now. He took to quoting the movies and books at odd times, incorrectly of course, just to watch Sherlock's face screw up before correcting him. "Wingardium Leviumton!" "It's Levi-o-sa!" It was too much fun to engage, this no-longer-secret shame of Sherlock's, this deviation from pure science into fantasy and witchcraft. John's really only sad he missed the pirate stage. "I cast a spell on you!" "They NEVER said that!" "...and now you're mine." Sherlock pouted but suffered through John's smug kiss.