Regional differences in meanings can be funny / tricky things somethimes. For example, in N/A, the word "fag" used to mean cigarette, and "gay" used to mean happy. There are lots of examples worthy of another thread for sure. I never liked the "MUG" as I thought it strange that something should be refered to as "UN-bifurcated" that was never furcated in the first place. Mono-trouser would have been a more accurate description. We can quote dictionaries, technical references, historical documents, etc, but they don't change the fact that one hole is one hole. In my opinion, the term MUG was invented simply to de-sensitize and re-assure males that their masculinity is safe and secure despite the fact that, regardless of whatever type of one holer you wear or what you call it, it's still a type of skirt. And that doesn't bother me in the least.