I watched an online video. Unexpectedly, I've same experience that my friend said exactly with this last bolded sentence in the video's conversation.
Stranger: Which train do I have to take to get back to Hakone?
Woman 1: Take the X line!
Woman 2: No, that's wrong! Take the Y line!
Woman 1: No, the X line!
Stranger: ... Which one?
Woman 2: I'm right!
Woman 1 (to Stranger): This one (Woman 2) has no sense of direction!
Woman 2: No, that's not right ...
Stranger: I checked on my mobile phone and it looks like the fastest is to take the Z line.
Woman 1 (to Stranger): I TOLD you so! I said Z line all along! Sorry this child is a little silly ...
Is there an adjective, a phrase, or a word for such kind of the behavior (the bolded sentence)?