Matthew McConaughey would be a teacher if he wasn't an actor.

Matthew McConaughey

Matthew McConaughey

The 'Gold' star has already got a taste of his other dream career as he is a professor at the University of Texas.

He said: "If I weren't an actor, I'd be a teacher or an astronaut ... I'm a professor at the University of Texas at Austin! This semester, I'm teaching students about the science behind the magic of filmmaking."

The 47-year-old actor grew up in Texas and is keen to pass some of those core values he learnt as a kid to his own children - Levi, eight, Vida, seven, and Livingston, four, who he has with his wife Camila Alves.

He explained: "The things about growing up Texan that I've tried to pass on to my kids are a strong work ethic and no false drama."

And Matthew also opened up about his childhood and family life.

He shared to Us Weekly magazine: "My older brothers, Rooster and Pat, used to call me 'Fat Man' as a child. They would tease me with the Batman theme song ... My favorite things when I was a kid were my football and my BMX bike."

Meanwhile, Matthew previously confessed his mother won't let anyone call him Matt.

Asked if he answers to Matt or Matthew, he said: "It's always been Matthew, and for good reason. I tell you mum got mad when I got called Matt. I was in kindergarten and my mum's a kindergarten teacher, and my buddy John comes up to me and is like 'Hey Matt do you wanna go play on the monkey bars?' and I ran out and said 'Yeah' and halfway to the monkey bars I feel this hand on my shoulder and I get slammed to the ground and I look up and it's my mother in my face.

"She's like 'What are you doing?' and I was like 'I'm going to play on the monkey bars with John.' She goes 'Who is?' I said 'I am,' she said 'What's your name?' I said 'Matthew,' she goes 'Don't you ever answer to Matt again, I named you Matthew from the bible.'"