Tastes Like Purple: Comes along with switching bodies and having sensory modalities available to you that aren’t part of your natural heritage. Until your mind and brain both adapt to the new information they’re receiving, you tend to spend some time staggering around babbling about how everything tastes like purple, looks like F sharp, and smells like orthogonality.

The other common situation in which it occurs (leaving aside dreamer’s honey and other fun recreations) is when an adult is fitted with a neural lace, rather than having one grow naturally. In the latter case, you see, it learns how to speak brain right along with the brain; in the former, it has to figure it out after the fact, which bedding-in process has results much like the above until everything’s bedded in properly.