If you can't beat them, join them, right?
A local hospital I frequently go to recently remodeled their ER, including the EMS room, which includes a bathroom and lounge. All over the North East Ohio area, almost every ER's bathroom has been heavily graffiti'd by us EMS folks. Usually it's an homage to ED (we're not quite sure who's ED, or ER) and a large hairy penis on the Wall. Well the new EMS coordinator at this hospital gave up fighting us, and decided to indulge us.
Strangely enough, I feel more comfortable seeing said graffitti in the bathrooms I use. MY wife has decided though that the large Hairy penis doesn't fit into our Decor.