Currently, I refactor some code in a private project at home. Yesterday I ran tests and some things didn't work I thought I already fixed. After I fixed them other things were broke and again errors felt familiar. With every fix and every new error I was more and more sure, I already did exactly the same things before. I thought, maybe it is a Déjà-vu or I dreamed about that.
After two hours, when everything was working again, I realized I did all this two nights before in a branch and totally forgot about it.
I wasn't even drunk -.-'