The phrase 'right, I'll tell you what' is a common conversational opener in British English, used to signal that a speaker is about to give a firm opinion or settle an argument. As a standalone sound, the clip has circulated in meme edits and reaction videos where the opening line does most of the work, setting up whatever image, caption or follow-up line comes next. Its appeal is less about a specific source and more about the recognisable tone, which turns everyday disagreements into a shared joke online.