This guy has just baffled the internet with this mind-boggling video.
Kevin Parry, from Oregon, recently uploaded a video to his Vine account which features him standing in front of a mirror, bouncing a ball to himself, while recording it using his mobile phone.
And no one can figure out what the hell is going on in this colossal optical illusion.
Many believe he used editing software to carry out the clever trick, others believe there is two people bouncing the ball, and that there is in fact no mirror at all.
Outrageous, we know.
Take a look and judge for yourself. Can you figure it out?