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."
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 October 9, 2008
 Get the turtleheadmug.
Get the turtleheadmug. oh my im touching cloth, i have a turtlehead
by The turtle heads. February 23, 2011
 Get the turtleheadmug.
Get the turtleheadmug. by ammre August 31, 2003
 Get the turtleheadmug.
Get the turtleheadmug.  Get the turtleheadmug.
Get the turtleheadmug. While I was in the car I had a turtlehead
by itSirBoi April 22, 2017
 Get the Turtleheadmug.
Get the Turtleheadmug. 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".
by Si Todd March 4, 2004
 Get the Turtleheadmug.
Get the Turtleheadmug. by Superstar McAwesomesauce December 9, 2016
 Get the Turtleheadmug.
Get the Turtleheadmug.