Well, you're right. It was a real mean fist.
6 seconds sound clip from the The Invincible Armour movie soundboard.
You can hear this line at 00:42:52 in the DVD version of the movie.
Quote context
[...]
- Now then, that monkey isn't young. He's 40 years old now!
- All these years he's been traveling around with me.
- This bruise was made by my wife's fist. You see?
- Wife's fist? I don't believe that.
- Well, you're right. It was a real mean fist.
- Well, it wasn't all that mean, because whoever made that bruise could easily have killed you.
- You see, whoever struck that particular blow was a real expert.
- In that case, count yourself lucky.
- Fabio, you trying to make trouble? Trying to see if your wine doesn't work.
[...]