I got into a fight with the cashier at the corner store

I walked into the corner store feeling confident, self-assured, and with no doubts. The cashier greeted me, which I didn't like but accepted as something she needed to do... I suppose. She asked me what I was looking for which was highly intrusive. I told her I was just looking around and she said, "Looking for what?" I didn't want to tell her because it was a personal item - dental floss - and I knew where it was in the store, so I didn't need her busybody help. I said I didn't need any help and walked to the aisle. I could tell she was glaring at me with her large breasts poking over the shelf displays on the counter. She was chewing gum.

Someone else came into the store and she screamed out, "What can I help you with?" The guy said he was looking for some pain relief medicine. She directed him to the correct aisle which was opposite from where I was and I looked at him to see if he was annoyed at being interrogated as he walked in. Surprisingly, from his facial expression he didn't seem to mind which was unsettling and made me feel angry.

I decided I wasn't going to buy the item there and went way out of my way to the supermarket to get it where I was able to use the self-serve checkout lane.