alt Hacker News> You customarily spit out that saliva that’s been in contact with your dip
I don't think this is necessarily true everywhere/for everyone, it's really not common in Sweden to walk around spitting just because you have tobacco under your lip, as people sit in offices and stuff with this in their mouth, can't really go around a spit indoors.
I can't speak for Sweden (I've never been), but typically all the people I've known in the US who dip regularly can be found with some kind of fast food cup they carry around with them as their "dip cup". It'll look like they're just taking a swig of some random drink, but in reality they're spitting.