
1) Internet meme
Found on
https://www.crosswordclues.com/clue/horsemaning

Horsemaning was reportedly a popular way to pose in a photograph in the 1920s in which the illusion of a beheading was created. The horsemanning photo fad derives its name from the Headless Horseman, an evil character from Washington Irving`s short story `The Legend of Sleepy Hollow`. Soon after its rediscovery later in the 20th Century, a seri......
Found on
http://en.wikipedia.org/wiki/Horsemaning
No exact match found.