I read from delimiter to delist.

The "fancy s" IS in fact a lower case Delta:

https://en.wikipedia.org/wiki/Delta_(letter)

The word of the episode is "delta wave".

https://en.wikipedia.org/wiki/Delta_wave

Oh damn! I was wrong about the deltoid muscle! It’s the one on the shoulder, not between the shoulder and neck. Now I feel quite dumb.

Theme music from Jonah Kraut

https://jonahkraut.bandcamp.com/

Merchandising!

 ...