It’s in my recommendation, sadly no English sub, so I won’t be able to understand it, but I’m still gonna watch it! :) I watch it, I bet he met a Korean person which made him exited...? I’m not sure until someone confirm it, but that’s my understanding about it...
Yes lol that's right. There are some signs only Koreans know. They use it by their gun, and they know that both they are Korean! After they know, of course they are so extied that they meet and don't hurt each other. I hope this writting gonna be help you :) +I'm Korean ++외국분이 보니까 신기하네요 ㅇ.ㅇ