The clip comes from I Think You Should Leave with Tim Robinson, the Netflix sketch comedy series created by Tim Robinson and Zach Kanin that premiered in 2019. Robinson's awkward, escalating characters made many short lines from the show into reaction sounds, and this doubtful question spread through memes, edits, and group chats for the same reason. Fans quote it when a statement deserves instant skepticism, and its short length keeps it easy to reuse years after the show became a cult favorite online.
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Tim Robinson's doubtful 'you sure about that' line from I Think You Should Leave, used as a reaction sound to challenge a bad take or bold claim.
This is Tim Robinson delivering a flat, doubtful 'you sure about that' that instantly turns a normal conversation into a challenge. The delivery is deadpan but loaded, stretched just enough to sound like he already knows the answer is no. It works because it is not shouting or insulting, it is pure skepticism in one short question. Viewers hear it as a pause button for bad logic, which makes it perfect for cutting into clips right after someone says something overconfident, careless, or completely wrong with total conviction.
