If you knew who I am, you'd be on your knees by now.
5 seconds sound clip from the Game of Killers (1978) movie soundboard.
You can hear this line at 00:27:34 in the DVD version of the movie.
Quote context
[...]
- Huh, I'll put all the weapons I have in your big mouth, all 30 of them.
- So they were right about you.
- What are you doing? Are you blind?
- You see I'm throwing water out here. You just keep walking by. Serves you right!
- If you knew who I am, you'd be on your knees by now.
- I don't care. Think I'm scared? I don't care. So what can you do, huh?
- I have no fear of anything at all, let alone death! What are you gonna do?
- My father always says, a good man doesn't fight a woman. He has no dignity if he does.
- Ha, I knew it. You've got not guts. You're just bullshitting, big mouth.
[...]