This clip is associated with the Spy from Valve’s Team Fortress 2, a class known for his suave voice, sarcasm and overconfident delivery. Short Spy lines became popular in meme edits, YouTube clips and reposted gaming compilations because they communicate attitude in just a second or two. “Oh yes” stuck around as a reusable reaction sound for suggestive jokes, smug approvals and TF2 in-jokes. It still shows up in gaming memes alongside other recognizable shooter callouts like Enemy Spotted.