Guns.

The other day I had the following exchange with a student:

Student: In America, you can have guns, right? Have you ever shot a gun?
크리스: Yeah, lots of times. We have a bunch at our house.
Student: Wow! That's awesome! I wish I could shoot a gun.
크리스: You have to join the army one day, you'll get to shoot one then.
Student: Yeah! Oh...yeah....
(sad silence)

Burned.