Do you know what this means? Lt means that this damn thing doesn't work at all!
10 seconds sound clip from the Back to the Future movie soundboard.
You can hear this line at 00:49:25 in the Blu-ray version of the movie.
Quote context
[...]
- I came here in a time machine that you invented.
- Now, I need your help to get back to the year 1985.
- My God.
- Do you know what this means? Lt means that this damn thing doesn't work at all!
- Doc, you got to help me. You are the only one who knows how your time machine works.
- Time machine? I haven't invented any time machine.
- Okay. All right, I'll prove it to you.
- Look at my driver's license. Expires 1987.
- Look at my birthday, for crying out loud! I haven't even been born yet.
[...]