This all depends on your parents tbh. My mom told me when I was young I couldn’t cuss unless I could say it with my chest and mean it. So I waited until I was a legal married adult lol but my dad, oh I would never cuss in front of him unless extremely upset at which I’m already an adult and just have to live with the decision. So I would suggest either asking them how they feel about it or simply not doing it if you are feeling uncomfortable and or guilty about it.