In this episode, you see a rare moment where both Desi Arnaz and Lucille Ball laughing at Vivian Vance's and William Frawley's get ups.
They commented on how they almost ruined the scene after the filming. Desi couldn't control himself and Lucille had to bite the inside of the cheeks.
The cast of I Love Lucy had always tried to spring surprises to keep reactions real. It was the first time Desi and Lucy saw Bill and Viv in these costumes!