these are men of men

[Mike Hussey]

Lefty says to Donnie about a greeting card to Santo Trafficante:

Lefty: Forget about it. Put a beaner inside here, then he knows these are men of men. You see, if I work out the strategy right, you got to hold up your end now.

What does "men of men" mean?

Source: Donnie Brasco (a 1997 American crime drama film directed by Mike Newell)

 

[Charlie Bernstein]

There's not enough context. Who are these? Inside what? A beaner inside a greeting card doesn't makes sense.

Mike, you watch some very entertaining movies. Don't mistake cops-and-robbers talk for ordinary conversational English. It's not. A lot of it is offensive, and a lot of it isn't used by most people.

 

[Mike Hussey]

There's not enough context. Who are these? Inside what? A beaner inside a greeting card doesn't makes sense.

Mike, you watch some very entertaining movies. Don't mistake cops-and-robbers talk for ordinary conversational English. It's not. A lot of it is offensive, and a lot of it isn't used by most people.

I think he mean Lefty gang will best of all men. Not sure.