What's he showing the camera?

https://www.youtube.com/watch?v=ZwvbQR887W0

For starts, anons, I don't even know who the clown in the shot is. I don't even know what's on his mask. I was honestly looking for something else and this JUMPED OUT at me. THE GUY LOOKS AT THE CAMERA AND FOLLOWS IT WITH HIS PHONE SCREEN!

>his screen:

It's not video of Garth Brooks performing. The image on the phone screen doesn't move. Our guy purposefully looks directly at the camera and follows it with his screen. Timestamp included in SS for ref.