I like to differentiate cussin' from cursing. Cursing is like the song "Nell Flaherty's Drake" or (my very own curse) "May all of your children grow up to be disappoints to you." Cussin' is what you do when your cutting the grass and you pull the power mower over the dog at the same time you run over the hose you were kicking out of the way when your foot found the concrete steps instead. It is permissible to combine the two when when the guy in the lane next to you turns across your lane to make a turn -- in this case you can also speculate about his or her hygiene, ancestry, possible afterlife, and general sexual habits.

Cussin' is okay -- letting off a good cussin' clears the soul and unblocks the psychological sinuses. Cursing should be reserved for the guy who stole my fence and similar sorts of undesirables.