If you have a ring stuck on your finger you wind floss - let’s say 20 times- semi tightly around your finger in front of the ring. You then slip the end of the floss under the ring and then start trying to unwind it. The idea is that you’re both constricting the size of your finger and incrementally moving the ring forward as you unwind it. In theory.
Until you get into botched synthol jobs. Or maybe that’s your thing also and you’re the reason people do that. Shame on you.