I had the cashier in a toll booth refuse to accept a perfectly valid old-style $20 bill last week. I asked him what was wrong with it and he whipped out a new-s

I had the cashier in a toll booth refuse to accept a perfectly valid old-style $20 bill last week. I asked him what was wrong with it and he whipped out a new-style one and said "they're not the same, it's fake." He even halfheartedly threatened to call the police.