I was in the grocery store yesterday get a few things, went to check out with a 22 year old working at the cash register. We talked about a box of cookies I had that were open on one corner and she went to exchange them for a new box. I was wearing a causal fem top, capri and running shoes. I have natural long hair (mid back) fem eye brows and natural very long nails, painted a very bright pink color. No make up at all, hair a mess and tired. So, I paid from my fem wallet and very pink nails and she said, thank you sir and the next breath she said I am sorry mam. It was the very first sir,mam I have ever gotten. I laughed to myself (not out loud) as I was leavening and said thank you. I have had lots of sirs and a very lot of mams, but this is the first sir,mam. Marshalynn