I’m not disagreeing... but I am just about the same age as Kavanaugh... attended catholic school in Montgomery county, participated in catholic league sports, and multi school theatre projects. My closest friend’s brother was a classmate of Bretts from Prep, and none of us think those terms had the meanings he gave them....and no I didn’t know both of the terms, but I was familiar with one of them.
So why don’t you set out what you think they meant based on your knowledge from that time and area. It would be helpful information for everyone.