Oh! You don't know what you're missing.
4 seconds sound clip from the Training Day (2001) movie soundboard.
You can hear this line at 00:28:47 in the Blu-ray version of the movie.
Quote context
[...]
- I bet girls like you meet a lot of nice boys at airports.
- Listen, you're really bugging me.
- You know, I got something I'd really like to give you.
- Oh! You don't know what you're missing.
- From here it looks like a nightmare.
- I'm not going to hurt you. Step aside.
[...]