A new film classification certificate is being tested which could change the type of movie you're allowed to watch.
The proposed PG-12 certificate will allow you to watch 12-rated films, even if you're 11 or under - as long as one of your parents comes along too.
America and most of Europe already have a similar system.
Violence and bad language
All films have to have a certificate, so you know what to expect in them: whether there's lot of violence or bad language.
The people who make those decisions are at the British Board of Film Classification - the BBFC.
They're trying out this new PG-12 certificate in four cinemas in Norwich before deciding whether to introduce it across the country.
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