What does wen lattan means in tagalog?

"Wen lattan" is not a recognized Tagalog phrase or word. It seems like a possible misspelling or a combination of words that don't make sense in Tagalog.

It's possible that you meant:

* "Wala na tanan" - This means "There's nothing left" or "Everything is gone".

* "Wala na lang" - This means "It's nothing" or "It doesn't matter".

* "Walang latak" - This means "No residue" or "No trace".

If you could provide more context or the full sentence, I might be able to help you understand what you're looking for.