what is that draft on my right cheek?

This morning Blue was the first and (thankfully)only person to noticed a large split down the back right side of my pants. It was a pretty grim realization that came only after arriving at school, yet before actually starting work. Making the 25 minute commute back home was not an option because I already had to take a long lunch in order to take Blue into town at lunch time and attempt to complete all the field work scheduled for the day :( So I did the good ol' shirt wrap and carried on with my morning. Luckily I was in working in the field alone so I didn't have to worry about much more than a draft on my backside.
I made a stop home at lunch to swap pants and realized just how threadbare my poor little pants were. I'm pretty bummed, I have had these pants for a long time (obviously) and they were my favorite field/hiking pants. A quick search online and I have already found the same brand/style for a replacement. The promise of new pants makes me less sad to give up the ghost on these old gals.