There has been a lot of confusion about where the 100 Person Beer Bong took place. But I assure you it was at UW-Oshkosh. Many UW-Madison students think it accorded there because they think a building in the background is one of their dorms. But what they don't know is that many of those same style dorms were built at other UW campuses because the UW system puchased the rights to the plans.
This event was documented by 2 camera men and posted as two different videos on youtube. Both videos say the location is at Oshkosh. I know it was at Oshkosh because I was there.