- Stupid is as stupid does, Mrs. Blue.
- I guess.

6 seconds sound clip from the Forrest Gump (1994) movie soundboard.

You can hear this line at 01:27:04 in the Blu-ray version of the movie.

Quote context

[...]

- I thought maybe you could hold it for a while, see if it grows on you.

- That Mama, she sure was right. It's funny how things work out.

- I didn't stay home for long, because I'd made a promise to Bubba, and I always try to keep my promise.

- So, I went on down to Bayou La Batre to meet Bubba's family and make their introduction.

- Are you crazy, or just plain stupid?

- Stupid is as stupid does, Mrs. Blue.

- I guess.

- And, of course, I paid my respect to Bubba himself.

- Hey, Bubba, it's me, Forrest Gump.

- I remember everything you said, and I got it all figured out.

- I'm taking the 24562 dollars and 47 cents that I got... Or, that's left after a new hair cut and a new suit, and I took Mama out to a real fancy dinner, and I bought a bus ticket and 3 Dr. Peppers.

[...]