I was in different state to where I live recently and there were two carts seemingly "abandoned" at the entrance to the largest mall in the city. I approached to see what would happen. I stood there picking up bits of paper reading bits and pieces of literature and putting it down again, the old couple who had parked themselves under a tree (I can always spot the dubs by their 1980/90s fashion sense a mile off) quite a way off just sat there watching me. I lingered longer testing how long it would take for one of them to get up and give a shit, after about 5 minutes the woman stood up very slowly and just stood there watching me some more and I placed the mags back and walked off she seemed relieved and sat back down.
I clocked it - 6min.