Could be that I pay little attention to hyperbole and ignore such things as RINO, HINO, DINO or even ROFLMAO!
Your ignorance showed. If you claim to oppose a side thoughtfully, you have to know something about their lingo. HINO has figured prominently, instigated probably by Supercat but then adopted by many others. It is a nice short way of saying philanderer and adulterer and begetter of bastards.