This one hangs on the wall of our favorite pizza place:
It reads "True Italian pizza is eaten without added sauce." Meaning, "Hell no! We will not give you ketchup for your pizza!"
This one takes a little more backstory. This car:
has been sitting at the end of my street for several years now. We use it as a landmark to tell people where to turn. Several complaints have been lodged with the homeowner's association, yet they always claim that the person who has parked this car here has a legal right to park it here and refuses to move it.
Someone (not us, I swear!) left this note taped to the window:
"THIS IS NOT A LANDFILL!
PLEASE MOVE THIS PIECE OF TRASH!
-THE PEOPLE THAT LIVE HERE"
The sign was removed the next day. And then someone busted out the window.