The clip, which began circulating on Tuesday evening, features a robot voice, and it is quickly becoming an audio version of the black-and-blue or white-and-gold dress debate which took over in 2015.
While some people hear the word “Yanny”, others hear “Laurel”, but according to some reports, the voice is actually saying both those words.
Which one you hear can depend on a number of factors – from your age, to the quality of your headphones or speakers.
Younger people tend to be able to hear words spoken at a higher decibel, which means the older you are, the harder it may be to pick out the word “Yanny” as it is delivered in a higher pitch.
Similarly, younger ears may pick out “Yanny” and have no clue how anyone can hear “Laurel”.
Headphones and speakers can also play a role in this, depending on the quality of the set, or if they are tinny.
A different version of events is playing out over Reddit, however, where one user who originally posted the clip three days ago claims it was from a dictionary website called vocabulary.com.
He said he was playing the audio for “Laurel” and his sister asked why he was playing the word “Yanny”.
The debate has drawn in celebrities, with author Stephen King and singer Ryan Adams joining the “Yanny” camp, while model Chrissy Teigan and presenter Ellen DeGeneres vote “Laurel”.
Three years ago, a picture of a dress circulated far and wide after people couldn’t agree on whether it was white and gold or black and blue.