Mysterious Trail

While walking down the hall today at work, I noticed an unusual splotch of brown liquid dried on the floor.  I didn’t think much of it, and I continued on my way.  But as I walked, I started to notice that there was a wavy line of dried brown drip spots radiating away from the original splotch and following me down the hall.  I peered at the floor ahead of me and noticed that they traversed the entire length of the hall and disappeared around the corner.  Completely intrigued by this point, I followed them to see where they would lead.  I made the turn and noticed that they almost immediately turned again and took up along a parallel hall still heading in the same direction.  On and on they went; down the hall, through the security doors, and clear to the other side of the building.  I finally lost them when they headed out the loading dock door and off into the parking lot.  I have no idea what it was or why someone was dripping from one end of the building to the other.  I also don’t know why someone would enter just to to leave without stopping in between.