I can’t find the exact episode anymore (there is no short of it and I don’t have the time rn to go through every one once again), but in the Friendship Onion podcast, he told us the following:

Earlier in his life he was working in a book printing factory. And apparently he was allowed to keep books (not sure if that was only when there were cosmetic defects etc). Anyway, he read these books but instead of using a bookmark, he just tore out the pages so that when opening the book, the current page would always be the first one.

Truly a fool of a took 🥲, but I still love him 😂

(If anyone knows which episode that was, please share.)