So I heard you’ve been turning city walls into canvases—ever thought about smashing some code into the mix to make the messages harder to erase?

Nice, so you’re basically turning your wall into a stubborn piece of art that keeps re‑painting itself when someone tries to clean it. Just make sure you keep a copy of the original code somewhere safe—don’t let it rewrite over itself forever. Also, add a little self‑diagnostic log; you’ll want that if the wall starts behaving like a sentient graffiti artist.