I don't use it myself, since my now 20 year old son was 17 months old. We have some really crazy drivers in this part of the world, and when most horribly scared by the antics of one of those, I would yell out in fear, anger, and relied that I didn't end up in a terrible accident, "Son of a B----!!!!.
Well, one evening I heard my seventeen month old son, who developed the ability to talk in complete sentences at fifteen months, singing a little song. Sonabitssonabitssonabits... What's he singin-------------OHMY....WORD!!!!
I reformed immediately and stopped using foul language. Kids'll do that to you.