Characters
Why do you have to break up with her? Be a man. Just stop calling.
— Joey · Friends

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Here the speaker offers a blunt, dodgy take on ending a relationship: skip the hard conversation and simply stop calling. Calling that 'being a man' is the irony. Avoiding the talk is presented as the tougher, cleaner option, which is exactly backwards.
Context reviewed