This is "Horsemanning" which was a popular photography fad in the where people posed in such a way to appear beheaded. Seems that "Planking" was not such an original idea after all, people have to doing weird stuff in photos since cameras were invented.
People- Geraldine Hoff Doyle, was 17 years (in while she was working at the American Broach & Machine Co. when a photographer snapped a pic of her on the job. That image used by J. Howard Miller for the “We Can Do It!” poster, released during World War.
The Nurse Who Saved Children From Nazis By Hiding Them In Coffins, WWII
Irena Sendler got permission to work in a Warsaw Ghetto as a plumber. She courageously smuggled babies in her tool box and carried larger children in a sack. She trained her dog to bark when Nazis were near. She saved 2500 children.