Bouba/Kiki Effect
Wow!!! I've thought my whole life about this at random moments....... when I was a very little kid, maybe 5-10 I used to say certain words and I would get a very intense visualization that would go along with it. The visualization was never of the actual object, but some bizarre shape or pattern, and it would always be the same when I would say that word.For example the world "girl" would visualize a head of hair with these brown slender shapes that would surround the head and move upwards.It's really crazy it actually has a name. I noticed as I get older it no longer happens, but I remember it used to happen incredibly intensely when I was young.