You didn't hear anything, man.
4 seconds sound clip from the Pineapple Express movie soundboard.
You can hear this line at 00:35:42 in the Blu-ray version of the movie.
Quote context
[...]
- What are you doing, man? Watch the upholstery.
- I heard something, then I saw something.
- You didn't hear anything, man.
- Dude, wake up. Get up. Wake up.
- Watch finally broke. Crazy. What time is it?
[...]