The sound is credited to Armando Hoyos, a Mexican comedian known for short, deadpan spoken lines that translate well into reaction audio. The phrase 'Yo sé' means 'I know' in Spanish, which gives it a clear meaning even for viewers who only catch the tone. It circulates on soundboards and in short-form edits, where Spanish-speaking creators use it as a knowing reply to a question, a reveal, or an obvious statement. Its brevity and calm delivery keep it reusable across jokes, pranks, and everyday commentary.