Man walks up to pay station at Sava Centar to pay for his parking. He puts in a folded 100 dinar note.
"Currency not accepted"
The notice says in English. Man unfolds the bill and smoothes it on his hand. Drops it. Damn. Picks it up, smoothes it out, and tries again.
"Uzmite Vaš kusur"
The notice says in Serbian. Man walks out in contemplation....
Lessons:
And...