The phrase is Russian internet meme slang built around shuesh, a playful form of saying you are kidding, and variants like da ty shuesh and da ty shuesh ya ne shuyu circulate as hashtags and captions with the clip. Rather than a single clean catchphrase, it works as an escalating argument line that users quote at each other in comments and edits. Its length helps it stand out from shorter reaction sounds, letting creators let the disbelief build before cutting away to the punchline or the next scene.