Okay, here's the setup.
My fraternity's parties were usually in the "basement" of the frat house where the dance floor and beer cooler for the kegs were...except it wasn't really a basement that had been built with the house, it was a basement that the fraternity had dug out from underneath the house and cemented in a floor and a wall about 3 ft high along the edges of the dancefloor that people would also dance on. So basically the bottom of the house was the ceiling of the party room, with electrical and speaker wiring and plumbing pipes running every which way.
Now running above the length of one of the dance walls was a large cast iron pipe about a foot in diameter, and when the party would get really rocking there would usually be several drunks swinging on the pipe junglegym-style out over the edge of the dancefloor.
One night as the party was kicking in high gear, some chicks were swinging on the pipe, and all of a sudden the pipe broke. Along with sending the people swinging on it flying, the end of this huge iron pipe came crashing down and smashed this chick on the dance floor on the head, knocking her out cold.
Hold on, it gets better. This pipe was the MAIN SEWAGE LINE of the house, and it immediately started spewing RAW SEWAGE onto the dance floor. Now because the dance floor was already soaked with spilled beer, mixed drinks, mud and probably some vomit, it took several seconds before the sewage smell registered with the drunks on the dancefloor...but once it did it was like rats fleeing a sinking garbage barge with all the people running off the dance floor from the sewage.
Now according to several frat bros who remained in the party room (I didn't, as I had quickly fled the sewage tsunami), ALLEGEDLY one of the bros with a reputation for eating ANYTHING (I can personally attest to this...I saw him bite the head off a frog, chew up live caterpillars and a goldfish) picked up a plastic beer cup, scooped up some of the sewage and took a sip. I do know he had to go to the ER later that night to have his stomach pumped, but I doubt that it was because he sipped on raw sewage. I personally believe it was just from drinking so much.