Ambassador Trentino is a very sensitive man. Perhaps if you insult him. He's very easy to insult.
5 seconds sound clip from the Duck Soup (1933) movie soundboard.
You can hear this line at 00:28:30.400 in the Blu-ray version of the movie.
Quote context
[...]
- This letter's the work of Trentino.
- The man is trying to undermine you. Now, what are you gonna do about it?
- I've got a good mind to ring his doorbell and run.
- That's a swell plan. Why couldn't you arrange for me to strike him?
- Ambassador Trentino is a very sensitive man. Perhaps if you insult him. He's very easy to insult.
- Why, I said something to Vera Marcal in his presence once and he slapped my face.
- Why didn't Vera slap your face?
- She did.
- What'd you say to her? You ought to be ashamed of yourself.
- Where'd you hear that story?
- Oh, yes! I remember. I should've slapped Mrs. Teasdale's face when she told it to me.
- At Mrs. Teasdale's tea party.
- No.
[...]