I know this one memory I had... I got killed a loads of times--don't remember a single thing of it. My brother and I were put in a time loop thanks to some trickster, a kind of demi-god with a sweet tooth and a sense of humor. It was Tuesday every day for like... over a hundred Tuesdays. Day ends with me being dead, and then we'd wake up and everything would be okay, except. Same day, same events, and only my brother Sam remembered anything of it.
We finally got out of the loop, though. But when I took that memory. Man, I kept falling over... like getting hit between the eyes with a brick except more like a hot flash of white? Anyway, it was because I would remember a Tuesday, die, and then the memory would be erased. Sucked hardcore. And we didn't even get to kill the damn trickster.