"No, not for forks. Most people could get hurt doing that, actually. Those're electrical sockets. They're for things like the fridge, the microwave, the toaster, the TV, the CD player," indicating each thing as he lists them. "That stuff runs on electricity, and they get it from the holes in the walls through plugs, liiiike... this."

He unplugs the toaster to show her, since it's closest.