BEIJING, May 21 -- Ben Stiller thinks his children are funnier than he is.

Ben Stiller and Christine Taylor arrives for the premier of "Night at the Museum, Battle of the Smithsonian," at the Smithsonian Air and Space Museum in Washington May 14, 2009. (Xinhua/Reuters Photo) Photo Gallery>>>

    The "Night at the Museum" star - who is married to actress Christine Taylor - is jealous of his daughter Ella, seven, and son Quinlan, three, because humour comes so naturally to them.

    He said: "The bond they share with their grandparents is a wonderful back-and-forth. They're always laughing. They call their grandfather Mr. Kineeche.

    "I don't know why - they make up silly names and they stick. So when he comes over, he announces himself, 'Mr. Kineecheee is heeeeeere!' in some weird accent."

    Even though the 43-year-old actor's comedic brood can entertain themselves, his "dad jokes" still make them smile.

    He explained to Parents magazine: "As a parent you do anything to make your kids laugh. And I don't think that has to do with being professionally funny. It's just being a dad."

    Stiller has been away from his family promoting his latest film "Night at the Museum: Battle of the Smithsonian" and is looking forward to spending Father's Day with his Christine and their children next month.

    He said: "I'm looking forward to sleeping late and hanging out with the family. My kids are just getting to the tie age.

    "That's when you feel like you've actually become a dad - when you get that official Father's Day tie."

(Source: chinadaily.com.cn/Agencies)