Just wondering myself. Is it a joke from the article author or those things are really happening ?
Last time I've seen dudes pissing in bottles was on a very drunken journey to a heavy metal show, hours of coach drive away, with no stop, no toilets in, and shitloads of booze consumed.
Henceforth the need to evacuate at all costs.
I remember one drunken dude drinking something and spitting all on my trousers telling me as an excuse: "it's piss". It took me a couple of seconds to understand he meant it literally: he confused one bottle of booze and one of urine.