My dad said, Don't kiss with your mouth open

Actor Will Smith tried to give tips on kissing onscreen to his 11-year-old son Jaden Smith who brushed it aside saying he is already good at it.

"My dad said, 'Don't kiss with your mouth open, you're definitely too young for that'. (But) I'm good at kissing, so it wasn't as challenging as it could've been had I not had previous experience," said Jaden, who has been acclaimed by critics and audiences for his role in "The Karate Kid".

However, the young actor admitted he didn't find locking lips as easy as he expected when it came to filming it for "The Karate Kid".

"It was one of the most awkward things I've ever done in my 11 years of being on this planet. Our faces were like, this close and we had to stay there so the shot was right. It's kind of awkward," he said.

He also revealed that his mother was banned from the set of the film when he was shooting the romantic scenes. "She agreed to stay in the tent, because she knew that she would come out like, 'Jaden, what are you doing, boy?'