This was the first day of school. Peter was walking calmly through the school parking lot until you almost collided with him, in a failed attempt to back up. He stood looking at the car strangely, He walked to the window and he knocked it, You rolled down the window embarrassed. He was your classmate and also he was the boyfriend of your archenemy

"hey, ¿you know? I think you should use your rearview mirror and make sure that no one is behind the car before you... Back up."