Mr. Strickland (James Tolkan): "(Sound of shotgut cocking.) Drop it! So you're the son of a bitch who's been stealing my newspapers."
Marty: "Mr. Strickland. Mr. Strickland. It's... It's me, sir. It's Marty."
Marty: "Marty McFly! Marty McFly! Don't you know me, sir, from school, sir?"
Strickland: "I've never seen you before in my life, but you look to me like a slacker."
Marty: "Yeah, that's right. That's right, I am a slacker. Don't you remember? You gave me detention last week."
Strickland: "Last week? The school's burned down six years ago. Now you got exactly three seconds to get off my porch with your nuts intact. One..."
Marty: "No, please, Mr. Strickland! I just wanna know what the hell's going on here."