I don't like Tati on its own but it's cute as an informal nickname for
Tatiana, which I really like. There's a character with this name in the Spanish-language TV show
Los Espookys and I associate it with her.
LISTEN TO THE MUSTN'TS
-
Shel Silverstein
Listen to the MUSTN'TS, child,
Listen to the DON'TS
Listen to the SHOULDN'TS
The IMPOSSIBLES, the WON'TS
Listen to the NEVER HAVES
Then listen close to me—
Anything can happen, child,
ANYTHING can be.