In Superman #709, the Flash has become a menace. How?

“Hey, this strange thing in the bottom of a crater looks like a hat. I think I’ll put it on!”
Because, as always in comic books, what is the worst that can happen?
In Superman #709, the Flash has become a menace. How?

“Hey, this strange thing in the bottom of a crater looks like a hat. I think I’ll put it on!”
Because, as always in comic books, what is the worst that can happen?