There's a little bit more to it than that. I am unfamiliar with the idiom,
and the idiom does not appear to be grammatical English, suggesting that something has gone wrong rather than that the speaker is using a foreign vocabulary item. Most idioms don't look like word salad, but this one does.
"Friday week" would ordinarily mean a week characterized in some way by Friday, but of course there can be no such week. There could be a "Good Friday week".