Weird Wednesday: What The Hey Is This?

I hope you can see that okay. It's a photo taken by a friend with an iPhone at a party. She was aiming, I think, at the large girl exiting the frame to the left. (She missed.) That's the side of the garage on the right, and there's some party-goers in the background.Then there's that thing in the middle. Uh, hello? What is that? My friend says there wasn't anything there when she took the shot. Certainly there wasn't anyONE there. And even if there had been, she wouldn't have been out of proportion to everyone else, cut in half and floating a foot or two off the ground.

Seriously, that is a weird photo. Anybody got an explanation?