I see this kind of behaviour as an attempt to 'shock' - I rarely come across it here , but a month or so ago I did. A group of 6 high school boys swaggered past me on the path through our grounds - the ringleader was loudly shouting "f***,f***' repeatedly, the others I could tell were impressed by his bravado at shocking what I am sure he thought was as a little old lady(I am not).
I calmly and loudly asked if he was to be taught two syllable words the next lesson, he went quite red and his mates then began to laugh at him.
I filed it under ignorance and a point to me.