- Brainy Smurf: [Speaking to himself in Papa Smurf's laboratory] If Clumsy is suddenly Brainy, what does that makes me?
- [Gasps]
- Brainy Smurf: Gosh... Clumsy...
- [Runs to leave the laboratory]
- Brainy Smurf: Wa... wa... wait for me!
- [Trips and falls near the laboratory's entrance]
- Brainy Smurf: I guess that answers my question.
- Hefty Smurf: We better wait until Papa Smurf comes back.
- Smurfette: But what if he doesn't come back?
- Hefty Smurf: Then he'll miss the end of the world!
- [laughs]
- Smurfette: That's not funny, Hefty Smurf. I think we should go back to the village. But if it's the end of the world, I wanted to be surrounded by friends when it happens.
- Hefty Smurf: I understand, Smurfette. But why don't you take Puppy back and I'll wait for Papa Smurf?
- Smurfette: No, you keep Puppy. That way at least, you won't be alone when
- [Kisses Hefty on his left cheek, then cries]
- Smurfette: ... when... goodbye, Hefty!
- [Leaves Hefty by jumping off the window stool and crying loudly]
- Hefty Smurf: [Gushes and giggles] The end of the world oughta happen more often! Ah, I'm not afraid to be alone even if...
- [Puppy barks]
- Hefty Smurf: And don't go too far, Puppy.
- [Puppy continues to bark]
- Hefty Smurf: Puppy, don't leave me! I don't wanna be alone!
- [Jumps off the window stool]