I was in the army in the 1960's, a fairly literate and imaginative era, what with flower power, the Beatles and the Beats recently having opened some doors and eyes.
Within that framework, men's room graffiti were often up-scale and provocative ... not just the, "for a good time call Jenny" kind of stuff.
And one of my favorites was a simple observation posted prominently over a urinal, where meditation is natural.
It said, simply,
A KISS THAT LASTS FOREVER IS A STRANGE GIFT.