When The Time Jerker throws the six at Henry, Henry only gets injured, but when Henry throws the same six at The Time Jerker, The Time Jerker gets knocked unconscious.
This episode takes place on February 4, 2016 (as shown on The Time Jerker's time machine at 12:15), which is a Thursday, but Captain Man clearly announces at the beginning that it's Wednesday.
Piper videotapes her prank on Henry with a stationary camera, but the shot pans on Henry as if someone is working the camera.