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What's the deal with your nickname? How did you get it? If your nickname is self-explanatory, then tell everyone when you first started using the internet, and what was the first thing that made you say "wow, this isn't just a place for freaks after all?" Was it a website? Was it an email from a long-lost friend? Go on, spill it.

Gauss's "Theorema Egregium" is a theorem in differential geometry asserting that the product of the principal curvatures of a surface is invariant under local isometry. Mathematically, it's the reason why curling a slice of pizza keeps the point from flopping over. These days it's usually translated as "Remarkable Theorem," because of course "egregious" has picked up a negative connotation that it didn't have back then. But I find it funny to call it the egregious theorem.