Simon Pegg says Tom Cruise is a "very naughty boy".br br br br The 48-year-old actor stars alongside Tom in 'Mission: Impossible - Fallout' and Simon has hailed his co-star's bravery, saying he showed no fear whatsoever when it came to performing his own stunts in the latest instalment in the money-spinning film franchise.br br br br Speaking about the Hollywood icon Simon explained: "It's always stressful. On this film in particular. There were multiple times when I flat out just said, 'Are you genuinely going to this, because this isn't entirely safe.'"br br br br But Simon admitted his co-star simply wasn't interested in listening to reason and was instead determined to perform his own stunts, regardless of how dangerous they seemed to be.