The beautiful designs and markings left on the inside of the toilet bowl after taking an extra-firm dump.
The firmness of the turd creates a "crayon effect".
Cave paintings will not wash away with flushing leaving but will deteriorate over time, leaving them for your friends and family to enjoy for days or weeks.
Wooo! That fudge dragon I pushed out of me left some cave paintings that looks like Charlie Sheen. Enjoy!
the markings left behind from a beastly turd after flushing it.
"LOL! you should have saw the cave paintings left behind that that beast drew on the way down the poop shoot!"