I heard a gunshot, so I looked out the window, and I seen them two boys run out, get into their car and drive off like maniacs, tires screeching, smoking, going up on the curb.

15 seconds sound clip from the My Cousin Vinny movie soundboard.

You can hear this line at 01:18:07 in the Blu-ray version of the movie.

Quote context

[...]

- But-But... he didn't, um-kill anyone.

- He-He, uh, um, uh... We-We intend to prove... that the p-p-p... prosecution's case is circumstantial and-and-and-and-and-Oh! Uh, coincidental. Thank you.

(SIGHS)

- That's it? What about everything we talked about?

- I get a little nervous sometimes. I'm gettin' better.

- I heard a gunshot, so I looked out the window, and I seen them two boys run out, get into their car and drive off like maniacs, tires screeching, smoking, going up on the curb.

- Is this the car? (2)

- Yes, sir.

- Thank you, sir. No further questions, Your Honor.

- Your witness.

[...]