You'd better get that gun.
4 seconds sound clip from the Mars Attacks! (1996) movie soundboard.
You can hear this line at 01:15:04 in the Blu-ray version of the movie.
Quote context
[...]
- There's a Martian right behind me.
- Hey, you're Tom Jones, right? It ain't unusual...
- Tom, Tom, can I have an autograph? Anybody got a pen?
(RAY GUNS BLASTING, PEOPLE SCREAMING)
- Hey, that was a hell of a punch.
- Hey, I saw you fight in Cardiff, Wales once. Yeah?
- I need a drink. You and me both, baby.
[...]