Not so specific, but fecious reasoning is a broad spectrum disorder that might be applicable...

From a quick dictionary lookup, "fecious" doesn't seem to be a word. Do you mean "specious?"

-ous: adjective forming suffix meaning "full of"

feces: sh*t

fecious: [I'll leave this as an exercise for the class]

I think it's slang. I found a definition on an online dictionary with a less-than-stellar reputation (they have a poor Web of Trust score). They defined it as meaning "suspicious and feces-ridden". Heh.

Fecious?

Whatever the latin for being wrong while trying to appeal to authority and intimidate someone would be.

If you want to coin it, seems like you can!