• It is hard to keep a straight face during comedy scenes. It's considered really bad form to laugh at someone else because you can ruin their best take. But sometimes it's very hard not to.

    Ben Miller: It is hard to keep a straight face during comedy scenes. It's considered really bad form to laugh at someone else because you can ruin their best take. But sometimes it's very hard not to.
    Source: www.theguardian.com