Refers to current descendants of the Wang Ji House from the Zhou Dynasty. The Wangs were noted horsemen who were notorious for riding through warring provinces to fuck shit up, just pounding their way to victory. In their celebrations that followed, the Wangs would host parties full of booze, dancing, and debauchery that everyone was guaranteed to wake up fucked up and hungover the following afternoon.
Time has eroded many of the war-mongering traits in the modern day descendants. However, if given enough alcohol, these Wangs would turn on their Asian glow, get on the dancefloor, and ensure a party is always properly raging.
Man, look at Wangtrain tear that shit up!
*Asian guy turns red*
White Dude: So you gonna get this party started or what?
Asian Dude: Fuck Yeah! I am! *Gets girls on the d-floor*
Girl 1, 2, 3, 4: WANGTRAIN!!!!