Lex Luthor and the Flash accidentally switch bodies.
Did You Know?
While in Flash's body, Lex Luthor threatens a technician's life by promising to vibrate his fingers into the man's brain. In the Flash comic #275 (July 1979), Iris Allen (the wife of the Barry Allen version of the Flash) loses her life when the villain (the Reverse-Flash) does exactly that to her. See more
After Mr. Terrific causes "The Flash" and a crate to fall, everything and everyone else who falls do so without the noise of their impacts and can't be seen a moment later. See more
Just be careful with my head - it's where I keep all my one-liners.
References The Great Train Robbery