The study of yapping. Someone who says a lot but doesn't say anything meaningful nor impactful. Someone who studies or practices Yapology is an expect level at yapping.
"He's so good at saying a lot, but everything he says isn't meaningful, he must have majored in Yapology."
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