system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: what happens in your brain when you are talking and letters get moved around during speech. An example is when I just said "that looks like the Sai of earaun" when I meant to say "the eye of sauron"??
gpt
That is called *spoonerism*, for knowledge.

Memory access errors occur in the auditory cortex; and these sounds are likely "placed" close by each other in there due to their relative similarity. When you are trying to recall the word "eye" to use in your head, the neurons firing mix it up with the "Sau-" sound being buffered for use and then boom! Misfire!

Honestly, though, that's pretty much all we know there is to it, a neural firing error. Nothing more specific than that has been known.