When you have to go poop so bad that it keeps coming partially out and you suck it back in to avoid messing your pants. This usually happens on a long trip, or when you can't get to a bathroom, or when it would be socially inappropriate to take a dump.
"I had to take a crap so bad I was prairiedogging like like a whackamole!" Or....."Me and Cheryl were out on a date and I had to take a crap so bad I was prairiedogging!"
To announce that an infant has filled his diaper with some awfully foul smelling poop.
"Hey Cheryl, what up wit' Ikeem, he got some serious d'babystank, yo!