Caught a dude doing this exact thing outside a coffee shop last year. He kept making this homeless guy walk back and forth so he could get the "perfect shot" of him handing over a sandwich. Thing is, the guy was clearly over it after take three and you could see his face fall every time they had to reset. After the fifth take I just walked up and asked if the sandwich was even real or just a prop. Dude got all nervous and started packing up his gear. Best part was the other guy grabbed the sandwich and walked off before the guy could finish filming. Felt good to ruin his little movie moment.