Here are some words I have read on the walls of public bathrooms through the years.
"Don't throw cigarette butts in our urinal. We don't use your ashtrays as toilets."
"If pro is the opposite of con, then what is the opposite of progress? It is Congress."
Below a sign which read Employees Must Wash Hands were the words, "I waited and waited. No one came, so I washed them myself."
How about this one: "To hell with Coca-Cola. This is the pause that refreshes."
Or this one: "Beer - helping ugly people find partners since 3472 B.C."
Another one read, "Patrons are requested to remain seated throughout the entire performance."
And a sign over the hand blow-dryer: "Push for a word from Congress."