How did you invent it? Have you had many, or mainly stayed with the same one? What was the inspiration behind yours? Do you theme your profiles/signatures to match?
(Mine was inspired by affinity for the beautiful world of fungi, Toad and Toadette from Nintendo, and the time my mother played a Super Mario game for the first time and gleefully screamed “HERE, MUSHY, MUSHY!” while attempting to crush those poor Goombas.)