When your feeling high on coke. This is the name of one of Mike Skinners (The Streets) songs and he explains it here at this link.
The word chang means cocaine and prang means agitated or fear of something. So the combination of chang and prang is prangin. When your getting a buzz on cocaine.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).