Defender Ferreira purchased a 'Yokohama Starbucks' coffee mug as a souvenir but goalkeeper Cech opted to save his money as dozens of fans in Chelsea shirts swarmed around them.
Picking up a small size coffee, Cech asked his team-mate: "Do you want to drink here or go back [to the hotel]?"
Closely watched by team security, the players patiently signed autographs and posed for photos with fans as they waited before Ferreira nervously replied: "Go back."
"Brilliant!" 21-year-old student Shohei Tanimura told Reuters. "That was lucky. I only came in for a quick coffee. Cech was huge. He's even bigger than he looks on TV."
Chelsea's jet-lagged players had just finished training ahead of Thursday's Club World Cup semi-final against Mexico's Monterrey in Yokohama.
Chelsea are expected to meet Libertadores Cup holders Corinthians in the final on December 16. The Brazilian side play Egypt's Al-Ahly in Wednesday's first semi-final.
