grumm, your wide eyed face is appropriate and was shared by everyone who was involved with this event. the chap involved did get asked what he thought he was doing but he just shrugged and went 'dunno'. and didn't offer to clean up his own mess.
some weeks later one of our drug addicted community had 'an accident' in one of the lifts. four lots of stupid nurses phoned me to tell me 'someone's smeared sh*t all over the lift'. and to my question as to what they'd done about it each and every one responded, you've guessed it, 'not my job'. classic.
after cleaning the lift i gave them all a little tutorial along the lines of – this is a cloth, this is cleaning fluid. i wasn't patronising at all.