What does sak ap fet mean in creole?

"Sak ap fet" is not a valid phrase in Haitian Creole. It's possible you made a typo or there might be some misunderstanding.

Here's why it's not a valid phrase:

* "Sak" translates to "bag" or "sack" in Creole.

* "Ap" is a contraction of "apre" meaning "after."

* "Fet" is not a common word in Creole. It might be a misspelling of another word.

To help me understand what you meant, could you please provide more context or tell me what you were trying to say?