A couple of months ago, I got into a huge argument with my parents, ended up shutting myself in my room for a whole weekend without food or sleep, and then they didn't speak to me for a week and I wasn't allowed to go out (apart from for school) for the rest of the month.
Even worse, one of my friends got a tattoo without permission, and when her mum found out, she was grounded for three months, was put on 'basic rations', didn't get any christmas presents and was not allowed any money or anything off them for the whole three months.
On the plus side, when she was set free, her mother told her that whilst under house arrest, she had won British Young Artist of the Year and her mother just hadn't told her.