A fork of Rural Dictionary
noun A large poop, containing cargo (such as corn). verb The act of leaving such a poop.
1. "At the party last night, someone upperdecked my fucking toilet." "Gross, dude" "Worse than that, it was a fucking cargo shit." 2. "Yo, I totally cargo shit in Eric's toilet last night." "Nice, dude." "Better than that, it was an upperdeck."
When someone poops into someone elses butt-hole, and then they poop it back into their butt-hole, with the same poop. Forever.
"Like I'll poop into her butt-hole. And then she'll poop it back... into my butt... hole. And then we'll just keep doing it back and forth. With the same poop. Forever." Poop back and forth.