[Act 1]
Bart: Watch this ugly face.

Lisa: That's nothing! Check THIS out!

Maggie: [speaks gibberish]

Bart: That's nothing, man! Check this...

Marge: Are you kids making ugly faces?!

Bart: Maybe?

Marge: Well you know, if you keep making those faces, you'll freeze that way, and be stuck with a HORRIBLE face forever!

Lisa: You think Mom is telling the truth?

Bart: Mom wouldn't lie

Both: ALRIGHT!

[Act 2]

Bart: Watch THIS scary face!

Lisa: Oh, yeah?! That's NOT scary!

Bart: Oh, yeah? That's not scary!

Lisa; Oh, yeah? THAT'S NOT...

[Marge suddenly appears and makes a scary face]

Both: [scream in horror] SCARY!!

[Act 3]

Lisa: I call this face "The Howller Monkey" [makes one]

Bart: I call this face "Dad" [makes a caricature of Homer Simpson, then suddenly...]

Marge: Alright, I told you, If you kept making those HORRIBLE facеs, they'd FREEZE THAT WAY! AND NOW THEY HAVE!

Lisa: They have?!

Bart: Our facеs are frozen?!

Marge: YES THEY ARE! Look at the mirror and see for yourselfs.

[They all look in the mirror and scream in terror]

All 3: WE'RE DOOMED!!