1. A complicated sexual maneuver requiring 3 men and one women. With a ladder two men climb up the ladder and the women arches her body beneath the ladder. Resembling a common log jammer, then the men take consecutive dumps on her back and with the the natural "channel". Conformed of her spine the "logs" will go down. Finally the third man waits at the end with his mouth open to receive the logs.
2. When you take a large enough dump that clogs up the bathroom.
3. A standard facility in Tennessee's lumberjack industry.
Tennessee log jammer
Guy 1#: Hey did you get the ladder?
Guy 2#: Yeah, steel, so it can hold us both!
Guy 1#: I cant wait for the Tennessee Log Jammer tonight
Guy 2#: Its gonna be sweet
Guy 3: Do I get to eat the sh!#t this time?
Guy 1 and guy 2: Its you turn, that ours sliding dumps from the girls back enter your mouth.