cave paintings 

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!

cave paintings by Apecreature June 16, 2011

Cave Paintings 

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!"

Cave Paintings by SkeksiesAKArissa September 29, 2011

cave painting 

like, when you're taking a shit and after you wipe and flush your turd is dragged along the bottom of the bowl,leaving marks and sometimes primitive drawings.this is sometimes,but not always,discovered by the next user.also called extra credit.

ex.1"dude,you just left nasty ass cave painting all over my toilet!thats the last time you use my toilet,motherfucker."

ex.2"whoa,that was a bad turd.greasy but tight.*looks in the bowl*EWWW!!fuckin gross.

cave painting by the shit afficianado February 1, 2007

Algonquin Cave Painting

After one shits, they than wait a day and come back to pile of skat. After skat has become semi-harden one than proceeds to draw the future or current events.

Steve: Mike why are we walking out here?

Mike: Well I took a huge shit, and as part of the Algonquin Cave Painting I need to wait a day so I can start my painting!

Steve: Oh well, I leave my first pile here than and we'll come back tomorrow than!

Algonquin Cave Painting by ChocolateEmu September 11, 2010

cave painting 

a cave painting is when you are doing a girl doggy stle while she is on her period. And you pull out and draw something on her butt cheek with the blood.

I pulled out and drew a little buffalo on her ass.

cave painting by william carr April 29, 2005

No cave painting no proof 

Used when a picture has been given as proof but you feel you need more proof or you just want to win an argument.

Guy: Dude you are so gay!
You: Bro no I am not.
Guy: Yes, you totally are.
You: No pic no proof!
*Guy presents picture of you having gay sex*
You: That wasn't me!
Guy: Yes it was!
You: No cave painting no proof!
Guy: Damn, I guess it wasn't you.

No cave painting no proof by Initial Definition May 27, 2015

Cave Painting 

When a man engages in sexual intercourse with a girl without any form of protection. The man fails to 'pull out' in time, therefore leaving the female with 'cave paintings' inside of her nether regions.

"We didn't have any condoms but we still done it anyway. I didn't pull out in time and she was left with some cave paintings."

Cave Painting by Siiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiimon? January 14, 2008