Reminds me of the time travelling back to Brighton from London on a Sunday evening some time in the early 90s. Engineering works and the only trains running between Victoria and Gatwick were the classic 73 hauled Gatwick Express units - all tickets accepted
I remember attempting to use one of the toilets but deciding not to as whoever had been there before had missed....and not just by a few centimetres but had probably exploded. In the sink were the, shall we say, the undigestible components of previous meals...
Suffice to say, after seeing this I decided to a) wait, b) never to even consider drinking or even using a sink on a train again, c) taking antiseptic wipes/soap along just in case, and d) feeling very, very sorry for the cleaner who would inevitable meet that later. The only thing I could think of was that they'd probably have to use a large quantity of petrol and a match to deal with it...eeww
I fear however after my first trip on a Voyager about ten years ago from York to Newcastle the above might not have been the worst incident that has happened...
t.
Ian