are you sure you're sure en · X
Etymology
Popularized by SpongeBob SquarePants in the show of the same name's episode "Hide and Then What Happens?", where he asks Mrs. Puff multiple times if she's sure she won't help him hide.
Meanings
-
(humorous) A way to ask if someone is certain about something.
SpongeBob: Are you sure? Mrs. Puff: Yes. SpongeBob: Are you sure you're sure? Mrs. Puff: Yes. SpongeBob: Are you sure you're sure you're sure? Mrs. Puff: Yes, I'm sure!
2010 August 9, Aaron Springer, Dani Michaeli, Andrew Overtoom, “Hide and Then What Happens?”, in SpongeBob SquarePants