Why do people spit? It's pretty common around here some guy in the parking lot must have generated a large volume of saliva and just found it undignified to reprocess it and just has to to get rid of it. Another very common place for this to happen is into a urinal right before taking a leak.
I perfectly understand hawking a loogie, or spitting after a chew.. not that I do it. But why spit perfectly good saliva?