I think the way QR codes have been used these last two years has left a lot of people with the impression that they're some kind of magical portal through the internet to some trustworthy source.
It could be funnier to replace the menu with a slightly fake one and see what happens when people try to order things that don't exist (but could reasonably be thought to exist).
Or outrageous items. Let's experiment.
I made a comment about how ads are being "stickered."