A popular meme, often tagged using the squinty eyed pic of Futurama Fry. Used to check if something really is x or not, in a humorously stupid way.
Not sure if trolling
Or just stupid.

Not sure if wet
Or just period.
by Ceastra July 30, 2011
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From the movie, "Idiocracy". It is the name that the machine gave the main character, Private Joe Bauers when he was getting his UPC code tattooed on his arm. After that, he was called "Not Sure" throughout the movie.
Female Reporter: It started off boring and slow with Not Sure trying to bullshit everyone with a bunch of smart talk: 'Blah blah blah. You gotta believe me!' That part of the trial sucked! But then the Chief J. just went off. He said, 'Man, whatever! The guy's guilty as shit! We all know that.' And he sentenced his ass to one night of rehabilitation.

President Camacho: Number 1: We've got this guy Not Sure. Number 2: He's got a higher IQ than ANY MAN ALIVE. and Number 3: He's going to fix EVERYTHING.
by Ingridd July 11, 2008
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Alternative phrase meaning "certainly", only used by international motor racing drivers for TV interviewers.
For sure I expect to get a podium position.
by Pugwash July 11, 2005
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A comment/ statement made when an individual would like to imply sarcasm or a lack of interest towards something someone else says. Sure can be pronounced in a very high pitched manner and may be accompanied by sarcastic head nodding.
'Hey, do you want to come to the shops with me?'
'SURE'
by Sting02 October 11, 2012
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"We should totally go to that show."
"For sure."
by Madison February 13, 2005
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When someone says surely, you know what's up.
Man 1: Oi
Man 2: what?
Man 1: Surely.
Man 2: Surely.
by Thiccsy March 4, 2020
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Not 'no'.
Sure.
by totallyrealname February 22, 2018
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