I have heard both the phrases "I lied" and "just kidding" used to avoid saying outright "I was wrong/mistaken" when correcting oneself (especially when it was something obvious). It is generally said as soon as the person realizes that they made a mistake. I think I've seen "miento" (in the present tense) for Spanish before, but perhaps someone else could confirm that. Do you use a similar phrase in your language for this purpose? Transliterations, phonetic transcriptions, and literal translations are all appreciated. (Excuse the formatting. I tried to separate some of the lines but it doesn't seem to be working right now).