Those are... They come with the tent.
5 seconds sound clip from the Billy Madison movie soundboard.
You can hear this line at 00:48:58 in the Blu-ray version of the movie.
Quote context
[...]
- Then my friends are always sleeping over, even when I didn't ask them to.
- Yeah, it kinda is. It can be distracting. That's why I moved out here.
- I'm faster than you. You're way slower!
- This is where I've been spending most of my time lately.
- Not exactly roughing it, are you?
- Those are... They come with the tent.
- Wow. A Tale of Two Cities. I don't think we're up to that one yet.
- I can understand nine words in that book now.
- Well, I can think of three things I'd like to do. One would involve some ice cubes, and a nine iron.
- Two would include a buffalo. Live or stuffed, preferably stuffed, for safety's sake.
[...]