it's part of the Great COVID-Crazy going on.
my Local Bike Shop owner had a women throw her bike at him on a local (and busy) MTB trail. He was apparently trying to help a young rider (maybe his daughter, not sure) who had crashed. The Crazy Rider must have blown through the scene too fast (with a blue tooth speaker blasting!), and he likely gave her "what-for" as he is want to do. (There was another report of The Crazy Rider being un cautious the same day when caution was warranted.)
Some how or another the thing devolved into her chucking her bike at him.
This whole Great COVID-Crazy is providing some real FaceBooks Entertainment....
Somebody throws their bike at you, it's now your bike, right?