a term used for the exact moment when your turd begins to exit your ass but you squeeze your cheeks together to make it go back in, only to find moments later, it starts to sneek back out, much like a ground hog sticking it's head out to look around.
"Damn, where the hell is the bathroom?! I feel like I'm ground hogging!!!"
Similar to "prairie-dogging": When a turd leaves it's nest, sees it's shadow, and runs back in. This is a precursor to the "turtle-head", and should not be taken lightly. Short yet expedited steps in the direction of the nearest toilet facility are recommended immediately. A post-evac check of the surrounding areas will signal a possible 6 week extension of gastrointestinal discomfort.
Jay- "dude its like the stage before ... like its not prairie dogging yet...its like right before that."
Greg- "Oh! So its ground-hogging ! It popped out saw its shadow and ran back up in there."