Or you could try this:
"I'm Sapphira. Sapphira the Pyro!"
Or not. [It's just a joke.]
I incorrectly said that I have had "only two" signatures so far. There was another, and it didn't follow the convention I mentioned. It also was dumb. Look:
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If Animal Crossing has a place in your heart,
Then remember this on your way to Nook’s mart:
To Cahquene should your passwords go,
So there may Errol find what your generosity does bestow.
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Remarkably, last night I thought of a potentially good signature that I can use next time I want a new one. I'll reveal it when that time comes (if nothing better comes along).
I posted in BORED!! With a pinch of salt.