"Sarah it's been reported that you hear Laurel, how do you respond?" an off-camera voice asks Sanders.
Conway joked that while the sound she heard was "laurel", she could "deflect and divert to yanny" if needed. Sarah Huckerbee Sanders implies the answer is probably whatever CNN says it isn't.
Do you hear "Yanny" or "Laurel"? that is the question now raging on social media and Danny Aronson, CEO of EVEN, the company creating headphones known as "glasses for your ears" has explained the technical reasons for the phenomenon.
"All I hear is the call of death's warm embrace", wrote Kate Aronoff, a reporter for the left-leaning In These Times.
In a cheeky clip posted on Twitter, White House staff argued over Yanny and Laurel. He hears 'covfefe', a word a invented previous year in a cryptic tweet.
Vice President Mike Pence has no idea what is going on ....in case you're listening, Robert Mueller.More news: Kohli shares his thoughts on batting with De Villiers
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Poppy Crum, chief scientist at Dolby Labs in San Francisco, said the environment in which one listens, including whether headphones or a speaker are used, affects the intensity of the frequencies, and hence what one hears.
"Yanny's the victor, Laurel's the loser", Schlapp says.
There is a difference between what you hear, and why you hear it.
Personally, we can hear nothing but "green needle", but do let us know whether you're Team Brain or Teem Needle.
Squidjeep said: "These videos do well on the internet because it's really cool to see how people's brains work".