First it was the great dress debate and then it was the color of a pair of flip-flops that kept people all over the world awake at night, typing away in online arguments over the 'right' answer.
READ MORE: The Great Dress Debate is Back With a Vengeance (And Flip-Flops)
There has now been a shift from the optical illusion quandary to an auditory one. An audio clip featuring a voice repeating one word is being shared on social media, with users both asking answering one question — 'what do you hear?'
Opinions have largely divided over the 'Yanny vs Laurel' issue, which has also triggered volumes of irony and memes online.