It's a play about a cow and the Indians searching for it. There are also politicians, Mexicans, Russians. Communists.
10 seconds sound clip from the Before Sunrise movie soundboard.
You can hear this line at 00:18:32 in the Blu-ray version of the movie.
Quote context
[...]
- Why did you come to Vienna? What could you be expecting?
- Yeah. She got pregnant. We had to get married.
- No, I don't believe you. You're a bad liar.
- This is a play we're both in. And we would like to invite you.
- Not professional actors. Part-time actors for fun.
- You have a real cow on stage?
- No, not a real cow. It's an actor in a cow costume.
- Yes, I am the cow, and the cow is a bit weird.
- She's acting a bit strange, like a dog.
- Great.
- And as you see, there's the address. It's in the second district.
[...]