
A 1 second exposure with a flash.
The long exposure lights up the background and the flash got our faces. We had to hold still or our faces would get mushy. The camera's on a trash-can with a 10-second timer.
Shot with a Canon 7D.
To get the shot we had to do it a half-doezn times which attracted the attention of 2 confused Disney employees. They were genuinely confused so I demoed the principle to them:

They did better at holding still than my daughter did.