It ain't you all, it's y'all.
4 seconds sound clip from the Rush Hour (1998) movie soundboard.
You can hear this line at 00:52:36 in the Blu-ray version of the movie.
Quote context
[...]
- War, huh, yeah, what is it good for? Absolutely nothing. (2)
- You don't know nothing about no War.
- Huh, yeah, what it is it good for? Absolutely nothing
- It ain't you all, it's y'all.
- Y'all.
- Y'all.
- Y'all.
- Man, you sound like a karate movie. Y'all!
- Y'all.
- Y'all.
[...]