Small Parcel, Big Reaction

(I am sending a parcel at the local post office and take it up to the counter to be weighed and measured. It is slightly too long to be considered a small parcel although it is fine weight and width-wise.)

Me: “I’d like to send this parcel first class.”

Cashier: “I’m very sorry but it is too large to count as a small parcel.”

Me: “Not a problem. I should have folded it smaller.”

Cashier: “You’d have probably not fitted the width restrictions then.”

Me: “Oh, yes, typical!” *said with a smile and a laugh* “Just tell me how much it is and I’ll pay.”

Cashier: “Oh, really? It’s [amount].”

Me: “I’m guessing most people don’t have the same reaction?”

Cashier: “You wouldn’t believe…”