Will Smith thinks raising teenagers is tough.

Will Smith

Will Smith

The 'Independence Day' actor - who has kids Jaden, 17, and Willow, 15, with wife Jada Pinkett Smith, and a 23-year-old son, Trey, from a previous marriage - admits it takes "everything" to cope with children when they reach adolescence.

He joked: "Teenagers should be [considered] an affliction, you know.

"Like, when people come up to you, like, 'Hey Will, how you doing?' - 'Awww man I got teenagers.' "

More seriously, he added: "It takes everything you have to raise teenagers."

Jaden has caused a stir with his bizarre interviews, most recently comparing himself to Galileo and claiming he and his sister attend a "mystery school" and his father says he and Jada decided a long time ago to just let their "artist" son be himself.

He told talk show host Ellen DeGeneres: "Jaden, because we're both artists, we decided a long time ago that it's sort of better to flow with what people are naturally, more than, like, what our egos need them to be.

"So we really try to find the things that they're [Jaden and Willow] good at, and support those things rather than forcing them.

"Jaden loves math, Willow is more of a reader so, you know, we kind of just support those things."