Firgun is when you feel really happy and excited for someone else when something good happens to them. It's like when your friend wins a game and you cheer for them and feel proud of them even though you didn't win yourself. It's a way of showing kindness and love towards other people by sharing their good news and being happy for them. Imagine it like sharing a piece of candy with your friend and feeling happy that they enjoy it too. That's what firgun is all about!