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.
Should really make you folks write out in longhand all these crappy representations that are ruining the language.IRDGAGD!
"begetter of bastards"
Please don't denigrate those children. They are innocent of any of this.