NPC concept: This character always interrupts things the PCs are saying, missing the context provided by the end of the sentence, and interpreting things completely incorrectly as a result. See how long you can keep it up before the players try to ditch the guy.
Transcript
Luke: Come in 3PO! We've just left the Peace Moon. You can order the Rebel fleet to dest—
[SFX]: KA-BOOM!!
C-3PO: Luke! Yes!!
C-3PO: Lando, Wedge! Luke was on the Moon—
Wedge: Oh, God. I've lost him. And I never told him anything. I just wasn't ready, Lando. Five minutes would have been enough.
C-3PO: —but he got out in time.
Wedge: Oh! Well done, good buddy! Come on!
Luke: Thanks for waiting for me to escape!
{beat: Wedge and Lando}
Lando: I won't tell him if you don't.