here's some of my fave bathroom grafitti, above urninals only. Stall grafitti i'm saving for psychological analysis...
This one was actually a real sign, posted by the owners of a redneck beer joint. When I was a kid, I was a country-western drummer, and saw a lot of beer-joint bathrooms... many of em just had a trough, instead of individual urinals.... hell for a guy with shy bladder..
"Please don't throw cigarette butts in our urinals. We don't piss in your ashtrays."
Also, the classic roadhouse coffeeshop sign: "Helen Wait is our credit manager. If you want credit, you can go to Helen Wait."
Real grafitti above urinals:
"Why are you looking up here?... the joke is in you hand!"
"The future of America is in your hands!"
"Bulls with short horns stand up close." (ouch)
"No matter how you dance, the last few drops go down your pants."
"Be alert!... the world needs more LERTS!"
"while you're looking up here, you're pissing on your shoes."
Ya'll got any?