Well, this is weird.
An animated GIF, which contains no sound at all, has been making the rounds today because some people claim they actually hear something while watching.
Evidently, for some people, their ears begin to prepare for the shockwave depicted in the loop, and close up—causing an actual sound in your ears.
Does anyone in visual perception know why you can hear this gif? pic.twitter.com/mcT22Lzfkp
— 𝙻𝚒𝚜𝚊 𝙳𝚎𝙱𝚛𝚞𝚒𝚗𝚎 🏳️🌈 (@lisadebruine) December 2, 2017
Can you hear anything?