The phrase yeah that's what I thought has long been used in everyday speech as a smug reply when an argument ends in your favour, and this short clip isolates that moment for online use. Shared as a standalone reaction sound, it spread through meme edits, gaming videos and short form posts where creators need a quick proved right punchline without recording their own voice. Its brevity and clear delivery keep it reusable across different contexts, from friendly teasing between friends to commentary on clips where someone is caught out.