Cashier Tales...

Yesterday I went to the gas station to buy gas and a fountain drink.  I walked into the store and filled up my cup with diet coke, then went to the register to buy the drink and thirty dollars worth of gasoline.  The total came to $30.85.  I presented the cashier with a hundred dollar bill, which prompted her to ask "Do you have anything smaller than that?"  I immediately quipped, "that's what she said."  She then let loose with the most sarcastic "ha, ha, ha" I have ever heard, which led me to believe that she must hear that sort of thing all the time in her line of work.