What can I do for you today ?   It's a little embarrassing really ; you see I think I've got a counterfeit note .   Do you remember where you got it ?   No , I don't . Usually I'm very careful about checking the money I'm given , but for some reason this one slipped through .   Counterfeit notes these days can be very sophisticated and difficult to spot with the naked eye . But I must warn you that if it does show to be a counterfeit I have no option but to confiscate it .   I understand . To be honest , I'll be glad to get rid of it if it is a fake . 