During the field sobriety tests it is common the DUI suspect performs the Walk and Turn test using an imaginary line. Many DUI defense attorneys hammer upon this fact when cross examining the arresting police officer. "How wide is your imaginary line?" "How long is your imaginary line?" "Do you have any idea if your imaginary line has the same dimensions as my client's imaginary line?" The police officer in this video is gracious enough to make a line out of masking tape. However, making a line out of tape with a drunk suspect proves difficult.