Here's a breakdown of the words and potential interpretations:
* Chu: This is a slang abbreviation of "je suis" (I am) in French.
* La: This is the feminine definite article, meaning "the".
* Ce soir: This means "this evening" or "tonight".
Possible Interpretations:
* "I am the one tonight": This could be a playful or flirtatious statement.
* "I am the [thing] tonight": This could be followed by a noun, like "I am the chef tonight" or "I am the party tonight".
* Misspelling: It's possible that it's a misspelling of a different phrase, like "Je la veux ce soir" ("I want her tonight").
Without more context, it's difficult to give a definitive meaning to "Chu la ce soir." If you can provide more information about where you heard it or what the context was, I might be able to give you a more accurate translation.