Today I was buying ice cream. When the cashier handed me my treat I took a bite. Then she tried to hand me another.
The other cashier was waving her arms. "Wait! You have the other persons ice cream!"
Sad face. I looked at the woman ashamed. "I'm sorry!" She took the ice cream. "But... I already tried some." She waved it off and we both paid for the correct ice cream.
That would never happen in America.