I don't think you understand who you're talking to here.
3 seconds sound clip from the Three Amigos (1986) movie soundboard.
You can hear this line at 00:12:57.111 in the Blu-ray version of the movie.
Quote context
[...]
- Why don't you tell the boys about the Cochise picture, Morty?
- Sandy and Irving are working on it right now.
- We send you boys to Baja and we shoot the picture in eight days. What do you think?
- He said, That'll be the day.
- What?
- I don't think you understand who you're talking to here.
- What the hell are you talking about?
- What we're talking about is money, real money. Amigo money.
- Boys, boys. Let me just say one thing.
- It'll be a cold day in hell when Harry Flugleman lets an actor tell him what to do!
[...]