It is frequently used in a lighthearted way to describe tourists who don't understand local customs or who are behaving in a goofy manner.
One command. :set farang-ding-dong = false farang ding dong shirleyzip fixed
And just like that:
Shirleyzip held the jar and hummed. She threaded a single stitch across the lid, not sealing it shut but anchoring a sliver of light there—a tiny triangle of morning sunlight caught on the jar’s rim. “Carry it toward the east,” she told the woman. “Don’t open the jar in rooms that remember dusk.” It is frequently used in a lighthearted way
Farang opened the thing with his customary care. Inside, the wiring seemed to have been arranged by someone who considered rules to be optional: loops that hummed like small electric rivers, capacitors lubricated with a history of failed attempts. Farang recognized not only the machine's components but its temperament. Machines, he decided, had identities if you listened long enough. This one had the stubborn hope of a performer who had missed opening night and kept tuning the curtains. She threaded a single stitch across the lid,
It sounds like you're referencing a specific inside joke, code, or a niche term (possibly from a forum, game, or private community). Since "Farang Ding Dong Shirleyzip Fixed" isn't a standard phrase, I’ve created a creative short text based on the vibe and possible meanings of the words: