I was mucking around with a Sigma EF-530 DG Super flash unit operating in remote wireless slave mode. I was testing false triggering from the focus-assist strobing of the built-in camera flash during half-pressing of the shutter release. See link below:
https://www.pentaxforums.com/forums/pentax-camera-accessories/51143-sigma-ef-...-comments.html
Anyway, I told my youngest son, Kaiea, to look at the Sigma flash and tell me when it fired (falsely). Later on, when I clearing out the SD card, I noticed the ususual picture captured during our experimentation. His feet have taken on an unexpected prominence. To me, it suggests the possibility of capturing a horizontal arm or hand gesture that is not that significant in the direct view, but is magnified & emphasised as a shadow. Might make an interesting staged shot.
A more normal crop
Dan.