Refraining from such act as "pooing" when your turd comes out a little and then goes back in!
Right now im Turtle heading.
Dam i need the crapper, i'm turtle heading!
Turtle heading is when you need to take a shit and it is starting to peer out of your ass. Like a turtle coming out of his shell.
"Hey bro let's move!"
"Hold on a sec I need to take a dump."
"Can't you just hold it?"
"Naw man I'm turtle heading!"