The line comes from Vestia Zeta, a Hololive Indonesia virtual streamer whose Indonesian-language streams made short, expressive reactions popular with her audience. 'Jangan dong' is a casual way of saying please don't, and Zeta's teasing, flustered delivery turned this moment into a reusable reaction for fans. Shared through clips, edits and soundboards, it spread among Indonesian-speaking viewers and anime fans who use it to flag playful embarrassment. Like other anime ahh reactions, it remains handy because the emotion is clear even without translation.