You're going about it in a very amateurish fashion anyway.
5 seconds sound clip from the The 39 Steps (1937) classic radio play.
You can hear this line at 00:34:02 in the radio play.
Quote context
[...]
- You want me to hang for a murder I didn't commit?
- As long as you hang, I don't care whether you committed it or not.
- What a bloodthirsty creature you are. Haven't you any pity?
- No.
- I'm merely trying to file the handcuffs.
- Well, don't jab me in the wrist that way. I don't like it.
- You're going about it in a very amateurish fashion anyway.
- I can see you know nothing about filing handcuffs.
- Tell me, how did you start being a criminal?
- So you want the story of my life. It's really very interesting.
- I was born a poor orphan boy. From the beginning, I hadn't a chance.
[...]