Uncomfortable Encounter

It was towards the end of my shift. I was helping someone check out at the desk, and my coworker came up to clock out on the POS system. Knowing that the business is family owned, the customer then looks up at my coworker, then to me, and says “Aww, are you his mom?” I wasn’t. She was around 25. It was incredibly awkward. She looks at me uncomfortably, and says “no, just coworkers”. The lady just left. 

To this day, I don’t know what was going on in her head.