The phrase grosser fetter Vogel is simple German vocabulary put together as a joke description rather than a quote from a known film or show. Its exact recording origin is unclear, but the clip circulated on soundboards and in short form videos because the wording is easy to understand even for non German speakers. The short length and deadpan tone made it reusable as a reaction insert, and it remains popular for absurd humour where a random label is applied to whatever appears on screen at that moment.