Surely everyone spits. Its not walking around and spitting for fun. I spit out all sorts when I have a cold but not in public. I spit out chewing gums but usually into bins or on a bit of tissue. What does everyone do with all the crap and dust in your throat? Swallow it? You kinda have to if you don't spit.
Yep when I take a chaw of terbacky, also when I have a cold I'm known to hawk up a pretty good oyster.