The intrinsic problem of writing self-inserts, demonstrated in a single meme.
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Now what could be wrong with my Mary Sue?
She’s very important, she’s got so much to do!
She pretty, she’s smart, and everyone loves her;
She’s got endless depths for her fans to uncover.
Though it must be admitted there is one problem, true,
Since there’s nothing at all for her sidekicks to do!