For those not in the know, 'Flugtag' is the fine art of leaping off piers and into bodies of water, supported only by a gliding contraption you've assembled in your back garden/garage/dreams.
Now an annual event, it's hosted and sponsored by Red Bull, who've taken the 'sport' and held it everywhere from New York to Leeds to Milan, where this year's jaw-dropping spectacle took place.
Impressive, right? Or, perhaps, just a little bit weird? Whatever the weather, you best check out our picture gallery of the event below to see just how they did it...