Ok, picture this scenario:
Child does something minor, and is punished by grounding for long-term. So, on the weekend, the child goes out with his friends despite his parents grounding the kid. He gets home, his parents say "You're grounded next week again since you went out." But grounding won't do anything, because the kid will go out again. So despite grounding time, the kid just keeps going out with his friends and stuff.
What would you predict to happen next? Can the parent call the police and report the kid missing, and have them brought home? What could they do?
EDIT:
Do I have anything to fear from my parents in telling them I'm quitting my sport even though they said 'they're going to force me to keep swimming'. If I just say "I'm stopping," they'll be like "no you aren't". I'll just make it clear I'm not. I mean, I don't have to fear anything physical right? Otherwise that's abuse right? I'm ready for punishments etc, but they can't hit me or anything right?