What did that woman want to tell me?

Long time ago... I was in a dollar store (nobody was inside) looking for some panties to buy (i liked to crossdress before), went to the cashier (a woman of 26 or so) to pay for the panties and the woman ask me if those were for me, I was going to say yes when suddenly a guy came in and I had to change my mind and I replied: no, they are for my wife