Believed to be initially spread by a fart after a certain dumbass asian ate some infected bat soup & farted. The first ever human to human transmission is believed to have occurred when his attendant happened to have sniffed the infected fart.
To Jonk. Posing for a photograph while presenting an intoxicated, unconscious person with great enthusiasm and fanfare. Good form and proper etiquette dictate that while the intoxicated party need not be known to the Jonker, the Jonkee should not be homeless or injured.
Not unlike planking, the practice is meant as a good-natured meme.