You missed out some of Buford's best lines from that scene! It's when Buford and Junior find Carrie's abandoned car, which is in the process of being stripped by three punks.
[Buford and Junior approach, unheard by the punks. Buford lights a cigarette and then loudly snaps his lighter shut]
Buford: Hold up on that car wash, gentlemen.
[To the first punk] Come here, son.
[He knees the punk, who falls to the ground] Whoops! You look tired, boy. Rest yourself.
[To the other punks] You punks look tuckered out, too.
[All three punks turn and place their hands on the car. Buford kicks the third punk's backside] That's an attention-getter. Now, a lady in a weddin' gown.
Punk #3: Yes, sir.
Buford: Get in a car?
Punk #3: Yes, sir.
Buford: See who was drivin'?
Punk #3: N-no, sir.
Buford: Licence plate?
Punk #1: Y-yes, sir. Georgia plates. "Ban-one." B-A-N dash O-N-E.
Buford: All right. Now, you boys just stay here and watch the car. There might be some vandals around who wanna steal somethin', so you boys just stay here and keep your hands on the car until one of my associates arrive. And don't go home, don't go to eat, and don't play with yourself. It wouldn't look nice on my highway. Oh, you can think about it, but don't do it.
[Buford and Junior leave]
Punk #3: Hey, man, he's gone. Let's get outta here.
Punk #2: S**t! You do what you want. I'm stayin' right here.