Walk of shame. Got a flat 2 miles from work and when I was inflating the spare, the tube and tire blew! Rather than try to patch the tube and boot the tire, I just decided to walk in the rest of the way. Funny thing is, I was the only one on time for an 8:30 meeting. I'll walk up to the LBS at lunch for a new tube and rig something up with the blown tire. I have spare tires at home. The one thing that amazed me was the lack of concern from other bike commuters who either saw me attempting to fix the flat or walking the bike.