The streaks left on the inside of the toilet bowl after a massive bowel movement, particularly those left after the toilet has been flushed.
“Dude I flushed twice and there’s still shit on the inside of the toilet.”

“That’s the Devil’s Graffiti, baby.”
by link1ater July 26, 2021
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The streaks left on the sides of the toilet bowl after an explosive bowel movement, particularly after the first flush.
Them: I’ve already flushed twice and there’s still shit stuck on the toilet

Me: That’s the Devil’s Graffiti, baby. You can’t deface what’s already been defaced.
by link1ater July 26, 2021
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