As a small child I was absolutely convinced that people in the olden days lived their day to day lives in black and white, and that they walked slightly faster than we did today (assuming a frame rate thing?).
I'm gonna put this one down to my understanding of how TV worked as a ten year old. Everything before colour TV was black and white... therefore everything was black and white. Makes perfect sense.
What about you?
I had a small toy dinosaur, which was god. I don't think the toy itself was god, but more likely it was a model/toy of god, who was a full-sized dinosaur.
Retrospectively, my best guess on the reasoning for this thought process was that one adult had told us that dinosaurs were really, really old, before there were any people, then a different adult had told us that god was really old and he created the people - and therefore I came to the conclusion that if god was really old and created people, he must have been there before people, and if everything before people was dinosaurs, god must be a dinosaur.
I picked my most "noble looking" dinosaur and decided "this one is god".
Objectively awesome kid logic.