for example, in Ontario it is not unusual to be asked where you got `this money` when you make a deposit. You have heard of a hold on check, well there are banks that put a hold on cash too. Your audience may be mostly Americans, but just be aware that there are different customs and rules out there.
How about that old custom of burying your money in a coffee can in the back yard? Yikes! And I thought I had it bad. What are they implying when they ask that? Does it only apply to very large amounts of cash, or do you get the third degree for a few hundred dollars? And when do they determine that the cash is valid - is there a criminal background check involved? Sheeesh!