Actually, Karry, I'm from Singapore. This is just a prank between fans. In fact, Karry is very popular now and has a large fan base, so many times his every move is very concerned, especially because many fans like him so much that they will investigate his previous black history. One of the black history is this video. He said that he was a Singaporean when he was very young, so people might think it was fun at first, and then it spread slowly. Now when it comes to Karry, everyone thinks he is a Singaporean.
I think Karry said that he was from Singapore, probably because he liked to have fun when he was young. Because as we all know, when I was young, especially boys, there was always a feeling of pretending to be forced. Karry himself felt this way, but he never thought that many years later, when he was very successful, someone would start this black history. So I think as a good-looking person, you need to be cautious at all times.
To sum up, I think Karry said he was from Singapore because he had said that before. Everyone thought his words were particularly interesting and spread out slowly, so many people thought it was a particularly funny thing, which led many people to think of it when they mentioned Karry. Slowly, it becomes a stalk.