Who is the author of sitsiritsit?

There's no known author for "sitsiritsit." It's not a published work or a recognized literary piece.

It's possible that:

* It's a made-up word: It might be a nonsense word or a playful sound.

* It's a misheard word: Perhaps you're thinking of a different word with a similar sound.

* It's a personal creation: Someone might have created it as a nickname, a made-up language, or a joke.

Could you provide more context about where you encountered "sitsiritsit"? That might help determine its origin.