Um, I know this is gonna sound kind of weird, but, uh, do you know anything about, um, time travel?

10 seconds sound clip from the Donnie Darko movie soundboard.

You can hear this line at 00:51:11 in the Blu-ray version of the movie.

Quote context

[...]

- Wait. Do you remember that weird gym teacher Mrs. Farmer?

- Yeah. Okay, well, my brother told her to shove a book up her ass today.

- And then my parents just bought him all this new shit.

- Yeah, I know. I wish a jet engine would fall in my room.

- Dr. Monnitoff?

- Donnie.

- Um, I know this is gonna sound kind of weird, but, uh, do you know anything about, um, time travel?

- Ah, a wormhole with an Einstein-Rosen bridge which is, theoretically, a wormhole in space controlled by man.

- So, according to Hawking, a wormhole may be able to provide a shortcut for jumping between two distant regions of space-time.

- So in order to travel back in time, you have to have a big spaceship or something that can travel faster than the speed of light?

- Theoretically.

- And be able to find one of these wormholes?

- The basic principles of time travel are there. You've got your vessel and your portal and your vessel could be just about anything most likely a spacecraft.

- Like a Delorean?

- Metal craft of any kind.

[...]