We all know that trope, most of the time spouted by (but not limited to) women as an emasculating insult, not foreign to PPD. Credit to this exchange

You're not a Real Man!

These guys here aren't Real Men!

A Real Man does/doesn't/should/shouldn't...

And from the sex/validation thread:

A real man’s self-worth should...

Considering masculinity not being very well defined in the modern age with individual traits being debatable as toxic masculinity and so forth, what constitutes a Real Man is not clear. Let's kick around why that's a useful insult as well.

Q4All: What is a Real Man? (specify gender/pill if not obvious)

Q4W & BP: For those of you who use the Real Man insult, why do you use it?