I have some related humor. Our building where I work at had similar problems in the mens room. Sometimes they get downright disgusting. Anyway, one of my co-workers came up with some really creative signs they could put up next to the toilets, but one of the geniuses upstairs shot it down. Which is practically a crime because these are really funny.
Anyway, I present to you words from the signs that belong in all Men's rooms next to the urinals and toilets:
THINK OF THIS
AS GOLF.
Legs shoulder
width apart,
knees relaxed,
head down, not
too firm a grip,
and keep your
aim true all the
way to the end.
PURINAL.
Putting the
P
back into the
urinal.
You don't want
to be a peon,
and neither do I.
Sincerely, the
floor.
Think of it more
as a rifle than a
shotgun.
If it will help,
visualize the
Cheerio.
Our aim is to
keep the
bathroom clean.
Your aim will
help.

- Hope you enjoyed them as much as I did.