I was constantly getting my ass hauled in the back room for swearing (which shouldn't surprise anyone on here ) but no one ever mentioned anything to me about possibly getting DF'd over it.
However, as we all know, the rules vary from congregation to congregation and it is certainly feasible that someone can get DF'd in one congregation for some imagined wrong-doing, and someone in another congregation would get nothing or at the most, private reproof for the same offense.
I remember Gumby telling me a couple of years ago that an elder he knew in some congregation in Arizona, wanted to DF this one woman because she was always swearing and spitting on everyone and they (of course) assumed she was possessed by demunz. I remember telling him to tell the dumb-ass elder that she almost certainly has Tourette Syndrome and that instead of DFing her for running with Satan, maybe someone should take her to the doctors to get some medication for crissakes.