The act of having two poops stuck in the toilet and both are fighting to get through the drain (with neither of them winning). Very similar to a singular log jam, but twice at bad.
"Dude you are never going to believe this - the other day i was taking a shit and my worst nightmare came true...i looked down and saw a double log jam; not just one stuck turd, but TWO! I panicked...i didn't know what to do so i called left it there for the next guy."
by Poop-doggy-dog April 13, 2009