Uncle Owen: "You, I suppose you're programmed for etiquette and protocol."
C-3PO: "Protocol? Why, it's my primary function, sir. I am well-versed in all the customs--"
Uncle Owen: "I have no need for a protocol droid."
C-3PO: "Of course you haven't, sir. Not in an environment such as this. That is why I have been programmed in--"
Uncle Owen: "What I really need is a droid who understands the binary language of moisture vaporators."
C-3PO: "Vaporators? Sir, my first job was programing binary load lifters very similar to your vaporators in most respects."
Uncle Owen: "Can you speak Bocce?"
C-3PO: "Of course I can, sir. It's like a second language to me. I'm a--"
Uncle Owen: "yeah, alright. Shut up. I'll take this one."
C-3PO: "Shutting up, sir."
Jawa: "(Speaking alien language)"