Going to a gathering with alchohol for the sole purpose of getting crunk extremely fast, and leaving. Only an asshole would pull this off.
"Who the fuck does he think he is?! Coming to my place, Power Crunking and leavin like that, ima beat that nigga down tommorow. He even drank the Bailey's!"
A door wall is a sliding-glass door or patio door. The term is yet another example of banal Michigan vernacular, where in the residents latch on to company names, trademark names, marketing terms and product names from local companies. The terms become embedded in the local vocabulary and eventually become accepted as actual valid words and phrases. In this case the term comes from Wallside Windows in Taylor, MI (a large window manufacturer), where 'door wall' is their created word for sliding-glass door.
"Bob! John's gonna bring over them doorwalls from Wallsides on Tuesdee afternoon 'round two-thirty. Get 'er done!"