We once had an issue in the ladies toilets at work where the end one was being used by someone with some sort of stomach problem (she hints, delicately!).
Unpleasant, but it's a toilet: we don't expect to grow floral arrangements in it, do we, or eat our dinners out of it?
However, one of the office ladies took offence and kept writing long, ranty notices about how disgusting it was and pinning them up in all the cubicles.
We grumbled a bit among ourselves then, one evening after the latest lecture had appeared on the door, I carefully took them all down and made paper aeroplanes out of them. I left them sitting on the toilet rolls. I heard several approving comments about "best thing to do with the bloody things!".
Undeterred, she carefully unfolded one of them and stuck it back in the end cubicle.
So I unstuck it again, carefully tore out eyes, a nose, and a big grinning mouth and stuck it back up.
It disappeared after that and we never had another. I did hear that the grotesquely grinning face gave a few people quite a turn while they were settling themselves down on the loo, though 