https://www.reddit.com/r/BringBackThorn/comments/100rerf/when_to_use_%EA%9F%93_double_%C3%BE/
Jan 1, 2023 · Bring Back Þ is a subreddit for þe movement to reintroduce þe letter Þ, pronounced "thorn," an Old English letter representing þe th sound þat fell out of use