You know, there were times when I was doing Jack that I actually felt retarded, like really retarded. I mean, I brushed my teeth retarded, I rode the bus retarded.

12 seconds sound clip from the Tropic Thunder (2008) movie soundboard.

You can hear this line at 00:42:14 in the Blu-ray version of the movie.

Quote context

[...]

- Thank you. Thanks. Yeah. Yeah, it was an intense experience, you know. I just did the work.

- Watched a lot of retarded people. Spent time with them. Observed them. Watched all the retarded stuff they did.

- Then again, I always found mere observation in and of itself is a tad rudimentary. Sometimes, we gotta dig deeper to mine the true emotional pay dirt.

- Thus, we can diagram the source of the pain and then live it, you know.

- Yeah, yeah, live it. Yeah, exactly.

- You know, there were times when I was doing Jack that I actually felt retarded, like really retarded. I mean, I brushed my teeth retarded, I rode the bus retarded.

- Damn. (2)

- In a weird way, I had to sort of just free myself up to believe that it was okay to be stupid or dumb.

- To be a moron.

- Yeah.

- To be moronical.

- Exactly, to be a moron.

- An imbecile.

- Yeah.

- Like the dumbest motherfucker that ever lived.

- When I was playing the character.

[...]