Coach Willis: You're not much into sports.
Casey: I don't think that a person should run unless he's being chased.
Coach Willis: "Being chased." I like that.
Nurse Harper: I'm saving my sick-days till when I'm feeling better.
Stokely: I always thought the only alien in this high school was me.
Delilah: Casey, when did you become Sigourney Weaver?
Stokely: Body Snatchers is a story somebody made up, dingus. It's located in the fiction section of the library.
Casey: Yeah, so is Schindler's List.
Delilah: Don't you just love how Stokely accessorize with different shades of black?
Stokely: Fuck you gutter-slut.
Delilah: I don't know why you keep being such a bad example for your people.
Marybeth: What people?
Delilah: I hope you're not a violent lesbian like your new found friend, here?
Marybeth: No, I'm not aware of any lesbianism in my lineage.
Delilah: That's too bad Stokely, guess you have to keep looking for Ms Right.
Stokely: Bipolar bitch.
Stokely: I'm not putting that hack drug up my nose - it's so eighties.
Zeke: Aliens are taking over the earth. Weigh it.
Stan: Come on guys, this is nuts.
Delilah: Then leave, Stan. Why are you hanging around? Go win a Pulitzer.
Stan: Blow me, Delilah, 'cause I'm sick of you're shit.
Delilah: Well, then get the fuck out of here and take your little freak dyke with you.
Stokely: Fuck you, tit bags.
Casey: Will everybody calm down, please?
Stan: Is this gonna be on the test?
Mr. John Tate: This is the test.
Stan: It must really blow being you.
Casey: You have no idea.
Marybeth: I'm pretty alien myself today.
Zeke: Yeah, my parents are dead too.
Marybeth: Really?
Zeke: Well, they are still breathing, but for all intents and purposes they might as well be dead.
Zeke: Casey, the only person in this school who's an alien is you, man.
Casey: Fuck you, Zeke.
Casey: You're not buying this, are you?
Stokely: No, I'm not... but it's kinda cool.
Casey: God, you can be such a.
Delilah: What?
Casey: Pretty cool human being when you're not being a first class grade A bitch.
Delilah: Are you hitting on me Casey?
Casey: No. No, I just think that you can be cool. Sometimes. This not being one of them.
Delilah: Your fanclub is here.
Casey: Network or local?
Delilah: Both.
Stokely: Is this usually the point where someone says let's get the fuck outta here?
Stan: Let's get the fuck outta here.
Zeke: Now, you, Delilah.
Delilah: No. Her first.
Marybeth: I'm allergic.
Delilah: Yeah, and I'm Portuguese. Who cares?
Marybeth: I'm new here.
Stokely: No shit.
Stokely: So they've just been setting us up over the years with their E.T.'s and their Men In Black movies, just so no-one would believe it if it ever happened.
Casey: I think so.
Answer: The aliens needed fresh water. All the infected were drinking bottled water. When the gang were examining the slug in the garage, it dried up and died from salt, like a snail.