Charlize Theron only knows "dirty stuff" in Spanish.

The 33-year-old actress’ new movie ‘The Burning Plain’ includes lots of Spanish dialogue, and when Mexican director Guillermo Arriaga realised she couldn’t speak the language he decided to teach her some naughty words.

She told BANG Showbiz: "Of course he taught me some dirty stuff! He had a really good friend with him and I was kind of like this little messenger between them. Guillermo’s friend Adrian would be like, ‘Go to Guillermo and say, blah blah blah.’ I’d be the little person rushing over to Guillermo
saying the words really loud, and half the crew understood."

Charlize admits she was "embarrassed" at not being able to converse with Guillermo in his native tongue, especially as she convinced herself she would learn the language before shooting began.

She said: "I’m really embarrassed to say I don’t speak Spanish. I’ve lived in California for eight years and I just think it should be a prerequisite – you should be able to speak Spanish if you live in California.

"I had this fantasy that I would learn Spanish before I shot the movie with him, that he would be really impressed with me, that he could direct me in Spanish. Of course it never happened."