Taking to Twitter to share their amusement, one viewer said: "Someone better have that gif of Paul hitting himself in the face with a cupboard."
Another said: "Am I going to hell for laughing out loud at the clip of Paul banging his head on the cupboard door?"
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Arriving at Michelle’s studio, they are split into teams of two and given their next challenge – the redesign of two cafes in the seaside town of Margate.
The finished venues need to attract both daytime and evening crowds, so the key to the task is delivering multifunctional spaces, with each team member taking ownership for their own zones.
Before heading to Kent, the teams get a steer from their new clients via a Zoom meeting.
One team learns that they must channel a cool Caribbean vibe, with their cafe also doubling up as an evening venue that hosts gigs and DJs.
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The other team has a seafront cafe, whose owners are looking for a design that avoids seaside cliché but has a welcoming vibe that matches their ambition to provide reasonably priced food for the whole community.
Two different businesses, but for the designers the same goal – to take a step closer to winning the biggest commercial contract of their lives.
Assisting Michelle this week was guest judge Ross Bailey, CEO of AppearHere, who has an in-depth knowledge of what makes small hospitality businesses sink or swim.
Interior Design Masters airs Wednesdays at 9pm on BBC One and is available to stream on BBC iPlayer.