I'm going to shoot you with a BB gun when you're not looking. In the back of the head.
6 seconds sound clip from the Anchorman: The Legend of Ron Burgundy movie soundboard.
You can hear this line at 01:33:15 in the Blu-ray version of the movie.
Quote context
[...]
- Sweet grandmother's spatula!
- Uncle Jonathan's corn-cob pipe!
- I'm going to shoot you with a BB gun when you're not looking. In the back of the head.
- Well, if I'm a dullard, you're the... the dull...
- Can't think of anything to say, now, can you?
- Yes, I can. I can think of a lot of things to say. Like you're a dirty bitch.
[...]