What's the thing no one believes you can actually remember?

Hmmmm.  I remember being in a cot (not mine) with some of sort silvery things hanging from strings hanging from the ceiling.  Someone who I suspect was dad getting me of the cot and and taking me down some spiral stairs.  If I was in a cot i'm assuming I was pretty young.  The person who suspects this may not be true is me.  It feels that this is a false memory.  It's something I doubt i'd ever be in a position to distinguish the truth from a dream.