James Griffiths says that scenes between Nick Frost and Chris O'Dowd took forever to shoot.
Frost and O'Dowd team up for new comedy Cuban Fury, which is released next week, and marks the directorial debut of Griffiths.
Speaking at the premiere of the film, the director said: "Anything with Nick and Chris was a disaster. I mean it was hours and hours of the two of them ribbing."
"There is one scene in the office where Chris has to describe what he'd do to Rashida [who plays female lead Julia], which is very, very rude.
"It went on for about 30 takes and we just couldn't get through it because everyone was gawping.
"In the end I had to do a single on Chris with no one else in the room, just doing the lines because it was tricky. But that's the joy you want, you want that headache."
The comedy bring together an all star cast as Frost and O'Dowd are joined by Rashida Jones, Olivia Colman and Ian McShane.
Cuban Fury is released 14th February.