No, I didn't.
3 seconds sound clip from the Step Brothers (2008) movie soundboard.
You can hear this line at 01:41:18 in the Blu-ray version of the movie.
Quote context
[...]
- I guess this is what it feels like to be grown up.
- Hey. Can I ask you something?
- You know back when you first moved in?
- Yeah.
- No, really, I won't get mad. I just wanna know.
- No. No, you don't, at all. No.
- Why wouldn't you take an apology if you didn't do it?
- Just because I'm cool. It doesn't matter.
[...]