sunoo often has these cartoonish habits that he acts out in certain moments like scratching his head when he's thinking, stuttering when it's awkward, coughing to be passive aggressive when getting someone's attention, it's very endearing. it's the same thing that you mentioned of purposely stuttering when he's openly nervous or awkward and it's the same thing here as with the "su- sunghoonie hyung" moment you mentioned 🥺 he did it here too https://x.com/goldenksunoo/status/1681331766517448704