Colin Farrell's children ''have no idea'' he's a famous Hollywood actor.

The 37-year-old star has two children - James, 10, who suffers from neuro-genetic disorder Angelman Syndrome, and Henry, four, from previous relationships - and recalled his younger son's confusion when he spotted him on TV, claiming both boys don't know he's an actor.

Quizzed on what his children think about his career, he said: ''They have no idea what I do for a living. Henry saw me on the TV screen once and he went, 'What are you doing there?'

''And James' way of processing the world is very particular, which is one of the beautiful things about him. I don't even know if I put a film on in front of James that he would even understand the idea of acting or performance - his cognitive capability is such that he understands a lot of magical and interesting things that I just don't, but there are a lot of boring things about the physical world that he may never be able to comprehend - and why should he?''

Colin insists his dad does ''dad things'' with his children and although he isn't the best chef he can make ''decent'' chicken fingers for the boys.

He added in an interview with Britain's HELLO! magazine: ''I do the dad things, you know. I make silly voices. They think I'm the guy to go to when they want to watch cartoons on the television. And that I fail at making them laugh and that I make kind of decent chicken fingers, except sometimes I burn them.''