You used more than one cord, didn't you?
4 seconds sound clip from the Christmas Vacation (1989) movie soundboard.
You can hear this line at 00:37:10 in the Blu-ray version of the movie.
Quote context
[...]
- Ready?
- You want me to do the drum roll thing?
- No, it's okay. Here goes nothing.
- I don't understand it. The house lights don't work, the flood lights don't work.
- You used more than one cord, didn't you?
- Maybe the kids have been fooling around with it. I'll check in back.
- Clark!
- Honey, I think I know what's wrong.
[...]