[on the phone while all the clocks chime at once]Dr. Emmett Brown: Are those my clocks I hear?Marty McFly: Yeah, its 8:00.Dr. Emmett Brown: Perfect! My experiment worked! Theyre all exactly 25 minutes slow!Marty McFly: Wait a minute. Wait a minute, Doc. Are you telling me that its 8:25?Dr. Emmett Brown: Precisely.Marty McFly: Damn! Im late for school![hangs up, grabs his skateboard and rushes out]