She was white.
3 seconds sound clip from the Training Day (2001) movie soundboard.
You can hear this line at 00:06:14 in the Blu-ray version of the movie.
Quote context
[...]
- We?
- Uh, oh, I'm sorry. Uh, Debbie Maxwell, my training officer.
- You had a female training officer?
- Ah, OK. OK. All right. All right. Ha ha ha!
- So what was she? Black? White?
- A lick her license. Was she a dyke? A lesbian?
- OK. Pretty good Debbie, mid-Watch. Go.
[...]