Listening to the trolleybus:
"The controller is going, the tickets are prepared."
• Pause
"Girl, do you have a certificate?"
The girl at this time shows her a school pass, and he is relying on carrying a certificate from the school, that you are studying there, shows a certificate.
Q:"You have an old certificate!!and "
D:"it is from 1 October"(the number is on the certificate)
K:" 2010 year old! Must be from 1 September 2011, pay for the trip!"

I have never heard of such a bluff.