At my uni halls years ago, we had a vending machine that did fizzy Ribena.
Rotten sugar-laden gloop it was, but anyway we'd been out and I blearily dropped 50p in, started on a can and went to bed at some point.
Woke up the next morning...reached over and found the half full tin on my bedside cabinet...took a big swig.
Jumped up, liek "Yik - I've put a fag out in that! :-((" and ran over to my sink.
Spat out the whole mouthful of Ribena.
And about 250 ants.
:-o - Nooooooooooooooooooooooooooooooo