I was opening my mouth to make fun of this game for trying to turn an internet meme into a real theory but now I'm eating my words because I didn't realize that the bouba/kiki effect was based on a real experiment
the concept of saying "these shapes have different nonsense names lol" just felt so internet culture to me
(notably it seems like bouba and kiki in particular weren't actually around until they replicated this experiment in the united states much more recently)
tom scott introduced it to me, not sure how this relates to the internet phenomenon, however.

