The frozen state of underarm sweat. Most likely caused by summer temperatures and humidity followed by lunch in a Chipotle.
The 115 degree temperature, excessive coffee and laughing lead to pitting out
, after which I entered a Chipotle and my pitstains
were turned into pitsicles. After leaving the Chipotle, which was maintained at an arctic 34 degrees, my pitsicles were once again pitstains.