The delicate art of acting like a complete callous asshole, oblivious to the fact that you may be right or wrong on a certain standpoint. The person exclaiming Pissbitchery spews forth a smug standoffish attitude where nothing anyone else does is correct and that they are they all knowing all seeing master of their own self important pathetic universe. Most people who fall under this state of mind are individuals with a false sense of grandeur and have successfully ascended past the rank of Bitch, Asshole and Smug Prick.
My IT Director was full of Pissbitchery after I discredited his blabbering nonsence during our weekly department meeting.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.