After 9 years

I have lived in this one particular house for 9 years. I have spelled the street I live on with out an s for those 9 years. My sister went to buy a lap top and the clerk asked her to proof her personal information. She said our street has an s on the end. I laughed and laughed and laughed at her and said no it does not. I drove past the street sign. The street sign spells it with an S. Hangs head down real low in embarressment.