just outside of DC. Musta been '95. I didn't pay rent, but earned my board by cleaning up after the parties we had every weekend.
One such Sunday morning, I find a half empty 2L Pepsi with the cap off. For no reason I can come up with, I put the cap on (after making sure there weren't any butts in it) and set it in a nice shady spot on the balcony.
I knew almost nothing about brewing at the time, aside from the couple of friends who had made jailhouse wine (in jail. You don't do that when you don't have to. Eww).
So anyways, after about a week or so I remembered the Pepsi. I took it to the railing and carefully opened it. IIRC it gushed. I smelled it. I think it smelled acrid, but didn't make me gag or anything. Then I took a swig. It tasted nasty. That much I do remember. But I had had worse drinks mixing all the flavors from the Slushy machine with a pint of cheap vodka.
So, I drank it. Really wished I hadn't. I got a buzz, but I'm not sure it was from an alcohol, or some other microbial waste product.
What I learned is not everything that's drinkable should be drunk. I mean, look at Bud Lite.