[Marsh.]

Originally Posted by Kizzy

Well then the thread would be 'have you ever got anything wrong'?... and flip, haven't we all... well, haven't YOU all? I haven't

I think it means an actual vivid memory you have of something, that even after discovering it's false you can't believe it as you remember differently.

Like us going to a party 2 years ago and I vividly remember you wearing a blue dress. I saw it and I remember it. Then you show me a photo and you were actually wearing a white dress. False memory.