You sure you know how to work the claymores, dude?
4 seconds sound clip from the Platoon movie soundboard.
You can hear this line at 00:17:05 in the Blu-ray version of the movie.
Quote context
[...]
- They're the best I've ever seen, Grandma. The heart and soul.
- Hey, cheese-dick, you're up.
- What?
- You sure you know how to work the claymores, dude?
- Flick the safety off and bang on that sucker three times.
- And don't catch any Zs on me, buddy, or I'll sling your sorry ass. You hear me?
[...]