Graffiti

Better than "salt", I guess.

Its a pretty good tip, actually.

Graffiti is something that's been around forever, even back to the cavemen drawings.

Kids, I know around town some of you have seen such great writings on walls as "BILLIE SUE I LUV YOU" and "KURT SUCKS," you know.  I even saw one once on a door that just said, "CAKE."  I thought it was a bold move, to declare one's love for cake in such a dramatic fashion.