Western Union Man (Joe Flaherty): "Mr. McFly."
Western Union Man: "Is your name Marty McFly?"
Western Union Man: "I've got something for you. A letter."
Marty: "A letter for me? That's impossible. Who the hell are you?"
Western Union Man: "Western Union. Actually, a bunch of us at the office were kind of hoping maybe you could shed some light on the subject. See, we've had that envelope in our possesion for the past 70 years. It was given to us with the explicit instructions that it be delivered to young man with your description answering to the name of Marty at this exact location, at this exact minute, November 12th, 1955. We had a little bet going to whether this Marty would actually be here. Looks like I lost."
Marty: "Did you say 70 years?"
Western Union Man: "Yeah, Seventy years, two months, twelve days, to be exact. Here, sign on line six, please."