Stellen: I'm so gay my bitch is gay yada yada yada yada booga booga boo
Jackson: Stfu you Yapologist
Stellen: you best quit yapping before I suck your dick
Someone who studies the art and science of yapping intensively; someone who yaps a lot to the point where they know much of the science and art of yapping.
One that is adept at delving through and retrieving items oft valuable from yahoo archives much like an archeologist.
The experienced yahoologist discovered remnants of disapproved defs disapprovingly declined that strangely seemed valuable for some inexplicable reason he could not quite fathom.
Someone (usually one with authority) who is exceptionally skilled at yapping and boring anyone out, even people with the best attention spans. They usually have something important to talk about, and usually end up speaking about something way off topic.