The Tire Gods must have been with me this weekend.
The usual ritual.
Haul the bike out of basement...
Start pumping up tires.. front tire looks ok..
Start pumping rear tire.. hmm.. awfully low... must be flat.
Hmm. it is flat. Now why didn't I notice that yesterday ? It was fine when I put the bike away.
Pull off tire, start feeling around for any obvious cuts. Nope.
Feel inside the tire and I pulled out a tiny little wire fragment that I could barely feel.
Maybe I should put out an offering to the gods ?