A feeling of nausea, typically accompanied by uncontrollable flatulence; often leading to gross and ill-timed defecations.
Friend: "Hey man, you don't look so good."

Me: "Yeah, I'm feeling a bit fecescious. It was probably the Taco Bell."

Friend: "I feel that. Just make sure you don't diarrhea all over the place."
by I Fly Dairy Air February 17, 2012
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joking or jesting about something in a manner that equates it to feces
The news reporter was fecescious in his criticism of the plumbing contractor that performed all the work that was now failing at the sewage treatment plant.
by savagetek June 8, 2020
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