When I registered on e621, I was going to call myself "Dunkelzahn" ("dark tooth" in German, name of a dragon in the Shadowrun RPG).
But then I thought, "that's not very original". Maybe "Funkelzahn" (glitter tooth) is better. Google gave me hundreds of results for that name, so I needed something else.
Eventually, I came up with "Munkelzahn" (rumor tooth). It doesn't mean anything, but it appeared nowhere on Google.
Updated by TransfatAsshat