익명 회원 whispered : Hyuk said that Kyu likes to making fun of members all day (based oon translation I read). Is it because Kyu wants more attention or it's just his way to love member? And why SJ member put "-shi" after name when they called each other in public and on-camera? But they didn't put "-shi" behind the public, just "-ah" for the younger and "hyung/noona" for the older.
I think it’s just the way he expresses his love to his members lol. Despite his mature and calm appearance, if you see it carefully and closer, he is one playful guy and such a jokester. People have different ways to show his love to close people around them. If Siwon’s way to show his love to his members is through skinships, Kyuhyun may show it through jokes and teasing. But it’s all only from my opinion and observation.
I may not be the best person you should turn to when you have question about Korean culture since I am not Korean. I can only give you answer based on my limited knowledge that I learned from media.
If you mean why do they put ‘-shi’ behind one’s name when they talk about someone (e.g: Sungmin talks about Kyuhyun and he refers to him as ‘Kyuhyun-shi’) or when they mention the person as the 3rd person, I think it’s because it’s more formal. The ending of -ah or -ie are more informal and usually, you will only be allowed to use if you are close to the person or you are older than them. Although even if some people are older than the other person, they will still ask the younger person if it’s okay to drop the formal speech between them and call them with ending -ah (-ie is used more for 3rd person). It’s why for some younger SJ members, they will often be heard using -shi or hyung whenever they talk about a certain older member or to call them in public. For example, Kyuhyun sometimes calls Sungmin with Sungmin hyung or refers to him with Sungmin-shi. Either way, it should be fine. I assume that since it’s in public, they tend to use a more formal way to call someone than the informal one, in respect of each other. However, perhaps in some cases, younger person or a junior will not use -shi to call an older person or senior, unless they are close (like SJ members) or there isn’t big age gap between them. I still remember during Kyuhyun’s first days as Radio Star MC, he called one of the guest, who’s older and more senior than him, with ending -shi, instead of sunbaenim/hyungnim. It made all of them there kind of surprised.
Anyway like I said, I have limited knowledge about Korean culture so please take my explanation with a grain of salt.