poo crayon 

a log of shit that "draws" on the inside of the toilet when you flush

i could have given my toilet to the museum after that poo crayon

poo crayon by progun December 9, 2008

poo crayon 

A slang term for the tip of a turd popping out your ass and "writing" on your underpants or panties.

i was prairie dogging earlier and now i've got streaks from the poo crayon.

poo crayon by Chuck Bucket February 17, 2005

Poo Crayon 

A small slender piece of poo that you can easily hold and draw with like a crayon. You can even wrap some paper around it to add to the effect.

Tara loves to write on Ryan's chest with a poo crayon

Poo Crayon by Joemaster Bates June 3, 2009

Crayon Poo 

No matter how much you wipe your arse after a poo, you continue to get a mark on the paper as though there is a brown crayon stuck up your bum.

Dude, what took so long?
Crayon poo.
aaah yes

Crayon Poo by madhatchetman September 4, 2010