Be nice to your sister!

2 seconds sound clip from the Groundhog Day movie soundboard.

You can hear this line at 00:32:49.710 in the Blu-ray version of the movie.

Quote context

[...]

- Let me ask you guys a question.

- Shoot.

- What if there were no tomorrow?

- No tomorrow? That would mean there would be no consequences, there would be no hangovers. We could do whatever we wanted!

- That's true. We could do whatever we want.

- Hey, Phil, if we wanted to hit mailboxes, we can let Ralph drive!

- Ha, yeah.

- Oh, hey. Hey, Phil. I think they want you to stop.

- Hang on!

- It's the same thing your whole life: Clean up your room! Stand up straight! Pick up your feet! Take it like a man!

- Be nice to your sister!

- Don't mix beer and wine, ever!

- Oh, yeah. Don't drive on the railroad tracks!

- Well, Phil, that's one I happen to agree with.

- I don't know, Gus. Sometimes I think you just have to take the big chances.

- This is the police! Pull over immediately!

[...]