That's a film selfie, I propped up my film camera against some concrete block that happened to be there, and took this selfie. More info about the background and the camera/film in the Lens Flair thread.
At a charity run with colleagues (42km relay in 1.5 km laps, with one person in the team being a "buddy" someone with a mental disability (you guessed it, the charity in this case is centered around more participation for people with mental disabilities), in our case the daughter of a colleague). Had a ton of fun, and managed 5 laps, coincidentally the longest run I've ever done.