Recording device, informally

Once upon a time, there was a mischievous squirrel named Sammy who loved to play pranks on his forest friends. One day, he borrowed his friend’s camera and decided to hide it in a tree to record their reactions. When his friend came looking for the camera later, Sammy left a clue for him to find it – “Recording device, informally.” His friend scratched his head, wondering what kind of recording device starts with “CAM”. As he wandered around the forest, he remembered a time when Sammy had shown him a hidden camera footage of him walking into a tree. Suddenly, the answer hit him – “CAM” was short for camera, the recording device that Sammy had used to capture their reactions. From that day on, his friend made sure to keep a close eye on his camera whenever Sammy was around. As for Sammy, he continued to find new and creative ways to play pranks on his friends, but always made sure to leave them a clue to figure things out.