The Inbetweeners star Blake Harrison has revealed his rucksack was the biggest challenge when it came to filming the sequel.
The 28-year-old reprises his role as Neil Sutherland in the upcoming follow-up The Inbetweeners 2, alongside Simon Bird (Will McKenzie), Joe Thomas (Simon Cooper) and James Buckley (Jay Cartwright).
"They've all got rucksacks and I've got this really horrible bag - the one from the first film and it's a practical nightmare to film with," he told Empire.
"And they all made it even more difficult by throwing it around just before someone called 'Action!' And then it'd be, 'Blake's not ready. He's really taking his time!'."
James joked: "We discovered early on that before they say 'Action', they say 'Set', which is when you throw the bag as far away as possible. Out of the room."
Simon also revealed that they never expected to return for a sequel, because the success of the first film took them by surprise.
"We all felt that the first film would be the final thing we'd do together and that was the case for two years. Then people talked a lot about how much they loved the first film," he explained.
"None of us could have predicted that success. When creators Iain (Morris) and Damon (Beesley) began working on a second script, the four of us were all saying, 'No, that's it, we don't want to do any more'.
"We'd made our peace with the fact that it had ended on a high. Once we read it, it was a no-brainer."
The Inbetweeners 2, which sees the gang heading to Australia, opens in UK cinemas on August 6.