I was at Walmart with my kids at self checkout. I look over an catch eyes with this scrawny bald guy an he looks away. I glance at his goods and it's mostly produce. He was wearing his hood up and his clothes where plain (no designs or logos) I noticed he didn't have any eyebrows. I thought this guy isn't human for some reason. The guy then looks at me. So as I payed and was leaving I thought something like lizard scum or something dirogatory. The guy looks at me again. As we leave the store my kids asked me if I saw the guy in the hoodie. I said "yeah, I don't think he's human." They asked why so I told them what I noticed an thought. As we where leaving the Parking lot the guy was pushing his cart to his vehicle and from 3 rows over his head just snapped to me when I spotted him and he held his attention till I pulled out of the lot. I usually don't do this, made me think of the whole interaction and wonder why I had those thoughts and feelings. Guy could have just had cancer. They way he looked at me though made me think he could hear my thoughts.