Me and Sam decided to do parkour. Once we arrived at the buildings, we got on the roof. We started jumping to building to building. 10 minutes later of doing parkour, Sam fell off the roof but he was holding on to the edge of the roof. I told Sam to hold to my hands but his hand was very slippery. “I’m trying to hold on,” he shouted. I pulled Sam onto the roof, Sam was glad he was safe. We decided we should go home and rest.