The meaning of the expression is : somewhat , something . I understand that the correct thing to do is to write the "yes" with an accent, since it is an affirmative "yes". "A yes is no is"
Me gives the impression that is is of a game of words. It consists of using words clockwise misleading, contradictory or in another of its meanings. The interpretation and meaning, in this case, depends on the context in which they are and spelling scores that have (if they have it).
Sustantivada adverbial phrase which means little thing, just a pinch, trivial, a tad, very little, almost nothing because it is a Yes to almost is a no, so the difference is minimal.