can you explain why "ki te mele'm" means I don't care? Mesi :)

It comes from the French expression De quoi je me mêle? which says I should mind my own business.

Haitian Creole's mele (from French mêler) means to mix, to mingle, to meddle, to get involved
So if I wanted to translate that literally, I would say:

Ki te mele'm?

Ki       |  te              |  mele   |   'm   |    ?
What  |  past tense | involve |   me  | question mark
What should I involve myself ?( literally)
or more exactly
Why should I meddle?

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