I had a speech impediment as a child where I couldn’t pronounce TH properly, instead using an F sound. Good thing I got all that cleared up before making this video.
If you’re curious what thorn looks like actually using thorn to spell it, it looks like this: Þorn. Now you know why I didn’t show it in my video.
Last fact, there are a bunch more letters the english language used to have, like Wynn and Yogh.