Jisungthough
Jisungthough is a term that gained traction primarily within online fan communities, particularly those dedicated to K-pop artists. It refers to a specific, often subtle, facial expression or mannerism observed in certain idols that fans interpret as a moment of deep thought or quiet contemplation. The "though" in Jisungthough is not a formal word but rather a playful suffix, often appended to a person's name to denote a particular trait or behavior.
The concept is most closely associated with Park Jisung, a member of the South Korean boy group
While the term is specific to Jisung, similar observations and nicknames for such expressions can be found