On Monday, was out doing stuff outside, and when I came into the garage, I noticed my truck was kinda leaning.. Thinking, "What going on??"
So I looked around and saw my rear tire was flat down to the rim! Thinking ok, I had my tires rotated last week, and haven't driven it for a few days.
Filled it up with air, and did a quick eye ball to see if I can find a nail. No luck. Next morning, I looked again the tire was low, but not flat.
Took it in, and guy came into the room, and showed me this!
I am like, "Are you kidding me!?" He said this was the casue of your flat! Guess I got it when I was at the brush dump last week!