What's this? Did he bounce off of a trampoline? It's San Francisco, after all. It couldn't be...
Oh, but it could!
These pictures are from this Flickr photoset of an event held in San Francisco last Thursday, taken by someone who calls himself "Telstar Logistics". People trucked in tons of crushed ice, covered up a section of Fillmore, and held a ski and snowboard jumping competition.
!!!