The term "Herbert" was an uncomplimentary slang term used by the followers of Dr. Sevrin. They were particularly keen on associating the term with Captain Kirk. The basis for the term was a minor official named Herbert, notorious for his rigid and limited patterns of thought. (TOS: "The Way to Eden")
As the term is presented as unfamiliar to Kirk, the officer for whom the term was coined may have served on Tiburon or Catulla, planets associated with Sevrin and his followers.