An encyclopedic volume encompassing the various species of rectal excreta.
Jason: "I woke up this morning with a terrible case of the plops. For the life of me, I just can't remember what I ate last night."

Dean: "Sounds like it's time to break out a scatalog and look it up."
by terminal2 October 27, 2009
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Used to describe an idea or way of thinking that is neither sensible or logical. A combination of scat and logical.
"If she thinks she is going to get him to marry her, she's being scatalogical."
by bowlegs February 26, 2007
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The way you can say "Same Shit: Different Day" to family, friends, boss, co-workers, priests, cops, Oprah Winfrey, Sarah Palin etc and sound highly literate.

It even has the same acronym (SSDD).
Scholar 1: "How goes the research into Shakespeare's use of Jungian allegory in his tragedies?"

Scholar 2: "Scatalogically Similar: Diurnal Discrepancy."

Scholar 3: "Ah yes, indeed." (Cluemeter reading zero)
by Uncle Des September 4, 2010
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