Oh, God damn it, David, please believe me. You'll kill and make others like me.
8 seconds sound clip from the An American Werewolf in London movie soundboard.
You can hear this line at 00:45:15 in the Blu-ray version of the movie.
Quote context
[...]
- I think I've lost my mind. I think you're not real. I think you're just another part of a bad dream.
- You gotta believe me, David.
- Oh, God damn it, David, please believe me. You'll kill and make others like me.
- I'm not having a nice time here.
- You gotta take your own life.
- I will not accept this. Go away.
- David?
[...]