Unintentional Marking of Territory

While working on an art project and enjoying some Saturday afternoon NPR, I felt compelled to scratch a pen on some paper to record a blossoming wayward thought. I briskly launched myself from my perch, found the suitable utensils for the task, and returned to my spot on the couch to find that I could surmise the precise location of my previous station as it was marked with a line of sweat left by the crack of my ass. So what? I do a lot of art in the nude. I wasn't so much embarrassed as I was amused by this unintentional marking of territory. The unfortunate result of this scenario was that amidst the ponderance of this humorous distraction I had completely forgotten what it was I was going to write down in the first place, having become entirely engrossed in the question: How much crack sweat is on this couch? Because even 4% ass sweat is a lot of couch.