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2.
(1) The result of gate crashing a "shindig";
(2) Small to medium majorly drunken get together (mainly goon and cheap beer) before going out somewhere expensive because no one has money to buy real drinks;
(3) The revival of a shit party which no longer deserves the title of "party" after being shit but has SOMEHOW got good again so is a "Shang bang"; or
(4) Anything you want it to be
Detroit's having a Shang Bang in the dungeon! BYO bitches!
by Shirl April 29, 2007
 
1.
An orgy involving Asian prostitutes exclusively.
I'm telling you, the Japanese really know how to party.
They pulled a Shangbang for the 72nd anniversary of their occupation of North China with more than 500 local Chinese hoes in a Zuhai Hotel, September 16 through 18, 2003.

Kato-San, did you tried all the hoes at the shangbang, or just concentrated exclusively on the fat one? You really liked to jello-pudding that big ho, didn't you?

When I die, I want go to "a shangbang"...
by Dan The Rod Leroux September 07, 2006