Cloe Feldman, a social influencer with her own clothing line, tweeted out a video of an audio recording. In the video, a voice can be heard saying a word.
The four-second video has already garnered more than 1 million views.
Online users are debating whether the voice is saying "Yanny" or "Laurel." This debate might eclipse the infamous blue dress debate that went viral in 2015.
A Vox poll on Twitter with over 5,000 votes has the majority saying they heard Laurel, as of Tuesday afternoon.
Talk show host Ellen DeGeners was also caught up in the hoopla and tweeted, "Literally everything at my show just stopped to see if people hear Laurel or Yanny. I hear Laurel."
It is unknown how the clip was made or whether it was altered in any particular way.
Yanny was a trending topic on Twitter on Tuesday as many users began making jokes about the hilarious debate.
Celebrities and social influencers far and wide reacted to this great debate. Circa captured some of the reaction.