I watched the video 3 times, but maybe I missed something? Granted, I don't speak the language, so please correct me if I'm wrong about what I saw.
1. A bill is borrowed.
2. The bill is vanished.
3. The lemon and knife is then produced and given to the owner of the bill.
4. Performer runs off (I thought this was great, just the looks on the faces in the crowd was priceless - except maybe to the bill owner).
5. Bill owner cuts open lemon. From the video I couldn't tell if the bill was there or not (was it?) ;) If not, what a great way to get tips. If it was, isn't the point of street magic to get the tips?
Lost in Cyberspace,