Mood: The mood of the video appears to be light-hearted and playful, with a theme of nostalgia and youthful energy. The three men in the image seem to be enjoying each other's company, pointing at each other with smiles on their faces. The overall theme seems to be about going back to college days and reliving the carefree moments of youth.

Environment: The setting of the video appears to be a college classroom or auditorium, with rows of wooden benches and a bright, airy atmosphere. The background is blurred, but it seems to be a daytime setting with natural light pouring in through windows.