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4.
A loaf of shit that is beginning to poke out of your ass prior to reaching a toilet. Turtleheads are generally dealt with using careful restriction of the sphincter muscles until you can make it to a toilet. You must squeeze firmly enough to prevent the shit loaf from further sliding out of the ass, but not so firmly that you chop the turtlehead off, or smash it with your ass cheeks creating an undesirable mess.
Guy 1: "I really need to take a shit."

Guy 2: "A little, or a lot?"

Guy 1: "Well, I've got a turtlehead."

Guy 2: "Okay, that's an emergency. Be careful not to pinch it off. I think I see a restroom over there."
by Big B72 August 16, 2008
 
1.
A distinct piece of feces pertruding out of a homosapiens rectum. The "piece" is slightly cone shaped and peeking out as would a common turtle from its shell.
Dude I gotta crap real bad, I got a turtle head!
by terd-dul hed October 26, 2003
 
2.
The tip of a turd that has opened your asshole just enough to peek out at the world.
I'm squeezing as hard as I can to hold it in, but I got a turtle head poking out.
by Mike April 12, 2004
 
3.
A word used to describe the current state of a departing poo. This term may only be used when the turd is protruding from your sphincter. Also known as "Touching cloth".
Person1 "What is that bulging in your trousers?"

Person2 "Oh that... Just a turtlehead."
by Si Todd March 04, 2004
 
5.
Usually a turd that is on its way out and you have not made it to a toilet.
OH, Man I've got to crap really bad. I have a turtle head licking/chewing cotton.
by Jerry Shaffer June 15, 2004
 
6.
when u have to take a shit so bad that it is popping in and out of ur ass like a turtle's head
Mom, stop the car I have a turtlehead!
by kAELA November 12, 2003
 
7.
When you have to take a crap so bad that it starts inching its way out!!!
Wow that turtle head is really starting to touch cotton!!!!!
by Player Player March 19, 2003