As an example of the Logjam Theory of Concepts as related to Balls Are Masculine, let me tell you a story about a bull.
Disclaimer: I remember Dawn telling me this story. I have to warn you that I almost invariably remember such stories better than she does, so it’s possible my memory has embellished things.
Once upon a time, Dawn had a case involving a prize breeding bull. This bull was so genetically gifted that six different people pooled their money to buy him. One day, this bull took a dislike to another bull on the other side of what I remember Dawn saying was a wall, but might have been a fence. Our bull attempted to get over the barrier to fight the other bull, but only made it half way. As a result, he unfixably ruined his testicles. He was no longer a breeding bull, but a beef steer worth maybe two dollars a kilo, so the syndicate was out a lot of money.
To my brain, that bull became the definition of “ballsy.” He sure went Balls to the Wall. And that’s tinged my understanding of masculine energy ever since. Which has been reinforced by seeing software projects where people went balls to the wall and only made things worse. To me, “balls to the wall” sounds like the sort of thing that causes you to spend tens of billions of dollars on virtual reality it turns out no one wants 
, or fire nuclear safety workers, only then realizing, actually, keeping nuclear weapons safe *is* a legitimate function of government, and then have trouble un-firing them because – oopsie – you don’t have their contact info any more. To name just two ballsy decisions made by people who fancy they have masculine energy.
I can no longer hear of “masculine energy” or think of ballsy initiatives without remembering that big, dumb bull who wouldn’t stop to think because, to him, aggression was self-justifying.
Assume, as with the Logjam Theory of Concepts, that there was a network in my brain that collected all the associations of "balls" and related words. Dawn's story memorably altered that network in a consequential way.
In contrast, learning the origin of the metaphor “Balls to the Wall” (which I did long after I learned the term) made a tiny tweak to its network that I doubt will ever affect anything.