One guy who claimed to be a medical resident really didn't want the bangers from my yard

I was gardening and had a really bad sunburn. I was headed to the grocery store, so I was wearing only a T-shirt and shorts. I had taken most of my yard waste to the recycling center. I really didn't want to get really close to the garbage dudes, because I was afraid I had poison ivy. So, I was just leaving the bagged yard waste on the side of the street and the garbage dudes would have to get it. I really didn't think I had the energy to carry all of it out to the garbage truck. I had a few bags left in my yard, and I decided to carry them to the street. I heard a voice behind me, and it was a guy saying that he really liked my yard. I'm confused, but I turn around and he's walking towards me. He said he was a medical resident and had been looking at houses in my neighborhood that day. The house next door is for sale. There is no realtor sign on my yard. He then says "I have a question for you. Are those bangers that I see on your porch?" I'm confused because I have bags of yard waste on my porch. And then I see that I had left the greasy metal parts from the ribs I had made in the smoker. So, the medical resident really wants to know what "those really greasy things are." I explain that it was a rack I used for BBQ ribs. He asks why I didn't throw them away. He seems exasperated that I didn't really want to touch them because I had poison ivy and didn't want to really contaminate anything. I think it's a little weird he was so interested in what I consider "garbage" and I was somewhat irked he was on my property. It was then that I realized that he had parked his car on my property, somewhat close to my front door. I just said something that I was afraid of bringing the poison ivy into the hospital if he was a medical resident. He got in his car and said "Your bangers are safe".