Three Guesses

Can you tell what this guy is doing from his facial expression? Falling backwards? Catching a football? Laughing at his friend who just skateboarded into an SUV?

OK stop guessing, because you're never going to guess that he's pulling the head off a goose as he gallops by on horseback. The "sport" of goose-pulling goes by the name of Ganstrekken in the Netherlands, and dates back to the 17th century. It's still practiced today though these days they use dead geese. The wiki article and a link to the whole image is here. The wiki probably amounts to an attempted murder of PETA members. I can't imagine one of them reading it without an ambulance standing by.

h/t: brudi