Colin Farrell's kids don't understand his career

Colin Farrell says his two sons have ''no idea'' that he is an actor and don't understand why he sometimes appears on TV.

The 37-year-old star has two children - James, 10, who suffers from neuro-genetic disorder Angelman Syndrome, and Henry, four, from previous relationships,

He recalled his younger son's confusion when he spotted him on TV, claiming both boys don't know he's an actor, reports contactmusic.com.

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?''