I remember a certain student's mother getting repeated calls from school, as her son hurled the choicest expletives at his peers. She would be so embarrassed! When the child continued to exhibit the same behaviour despite several warnings, we decided to delve deeper and after a series of meetings it was found, that he had picked up the words from his father who had an unrationed supply of these.
My father used to be on tenterhooks when one of our relatives visited us, because he let out a string of abuses without much thought of people around. So poor dad had worked out an arrangement with him, that he could abuse as much as he wanted when he accompanied him to office. "Not in front of the kids, please", he'd plea.
I've been hearing so much of the 'F' word recently in English movies and serials that no sentence is complete without it. Indian stand ups, AIB and the likes have followed suit. Profanity seems to be a potent drug. Research proves, "it allows us to express our emotions, to vent, to release. It also communicates very effectively, almost immediately, our feelings which other words don’t. The utterance of a single f-word can convey the state of a person—whether they are angry, upset, excited, surprised or aroused—and the intensity of that state."
I seriously feel these words are used to shock. In a culture where they're are a taboo, the one using them is considered brave, someone who can go against established norms, a bit of a maverick. And then youngsters hear so much of these all the time, that they feel out of place if they don't use them.
We have an entire vocabulary of cuss words in our native tongue as well, but parental discretion is advised. I'd rather you not use them at all, which is definitely possible, given so many of us who don't. A dictionary or Google can come in handy for alternatives. A little restraint and rethinking could save you a lot of embarrassment and some parent-teacher meetings as well!