Penoral defication- is a socially accepted form of pissing.
The word comes from the catholic edited version of the Second testament - Roman soldier to Jesus of Nazareth:"gonna cry? gonna piss your pants maybe? maybe shit and cum?"
Because of vulgarity of the word "piss" theologicians with the help of "minor" assistants came up with the given phrase.
Uncle Balthazar: Hey little Jimmy! Do you want know what Penoral Defication is?
Jimmy in a wheelchair: *drooling*
Uncle Balthazar: *unzips pants* Well you came to the right place! *starts pissing*
the action in which a person leaves a party or formal gathering while failing to inform others about his departure leaving them clueless and apprehensive about his abrupt vansishment from the vicinity.
while attending a party or gathering, one initiates hufman's theory of departion by simply fleeing in secrecy leaving his acquaintances completly ignorant to his dissapearence; this action also tends to piss people off as well.