Alien brain parasites, entering humans through the mouth, turn their host into a killing zombie. Some teenagers start to fight against them.

Detective Cameron: I got good news and bad news, girls. The good news is your dates are here.
Sorority Sister: What's the bad news?
Detective Cameron: They're dead.
Detective Cameron: What is this? A homicide, or a bad B-movie?
Detective Cameron: Zombies, exploding heads, creepy-crawlies... and a date for the formal. This is classic, Spanky.
Chris Romero: Detective, other than confessing to a murder, is there a point to this conversation?
Brad: Okay, so we put you up to it... but we said the Phi Omega Gamma house, *not* the Kappa Delta sorority. Do you know the difference?
Chris Romero: [shrugs] It's all Greek to me.
[repeated line]
Detective Cameron: Thrill me.
[answering phone]
Detective Cameron: Thrill me!
Sergeant Raimi: Detective Cameron?
Detective Cameron: No! Bozo the Clown!
Detective Cameron: I suppose Rip Van Winkle would be the other body; where is it?
Sergeant Raimi: The other body isn't here, sir.
Detective Cameron: What? Did he have a date? Whaddya mean it isn't here?
Detective Cameron: What's this?
Detective Landis: It was a grad student. He was scheduled to work here this evening.
Detective Cameron: Looks like he worked a little too hard, huh?
Detective Cameron: It's Miller time!
Detective Cameron: What I'm going to need is your standard flame thrower.
Detective Cameron: You sonuva bitch. I already killed you.
J.C. Hooper: Oh my God, oh my God, oh my God, oh my God, oh my God, oh my God! Do you think it's taking the Lord's name in vain to say "oh my God" a whole bunch of times really fast like that?
Detective Cameron: Corpses that have been dead for twenty-seven years do not get up and go for a walk by themselves!