Ricky Gervais is apologetic: "I haven't got any questions." It isn't the most promising start to an interview.

Talking to his friend Christopher Guest in an exclusive interview for the Telegraph, Gervais grills the Best in Show director and This is Spinal Tap star about everything from fly-fishing to his taste in shoes. Between it all, Gervais manages to squeeze in a few questions about Guest's new Netflix movie, Mascots.

Throughout their 19-minute conversation, Gervais frequently collapses into giggles while the deadpan director remains mostly stony-faced. Guest offers one and a half laughs (one following a deeply awkward silence), and cracks a smile, briefly, while talking about bespectacled fish. Eventually, he resorts to asking his own questions: "How did I meet Ricky, people have asked... No-one's asked."

Watch Ricky Gervais' full interview with Mascots writer and director Christopher Guest below