I read it twice before I understood what it meant. Then I had a major moment of regret that I would never have those two minutes of my life back. Perhaps I'm just weird, but I largely don't care to even see pictures of my friends' daily lives, unless they are engaged in something epic.
I don't use snapchat but I know a lot of teens and twentysomethings that do. They use it for all kinds of silly "heeeeeeey, wish you were here!!!" moments. For example, I was at a fundraising coffee house type event with a bunch of friends. One of their buddies wanted to be there but was out of town, so they kept sending her snaps and video clips of what was going on so she could get a taste of what she was missing. A lot of those photos were self-pics of friends huddled around the camera and making silly faces.
Could they have done it in other ways? Certainly -- they could have emailed her photos, or set up a livetreaming webcam, or posted photos on Facebook. But this method was immediate, almost real-time, and, I guess, more fun for them.
Adult-oriented applications aside, I figured the fun of snapchat was the impulsiveness of the feed. Like video chatting (which
can, technically, be saved, but usually isn't). In other words, I see the app's usage context not as "to send someone very private photos that theoretically can never be seen again" but "to send someone quick, one-off, fleeting snapshots of a moment in time".