Someone who leaves a turd behind in a toilet, usually public. Usually, this "gift" is well wrapped with toilet paper and so large that the toilet cannot be flushed safely.

Like Santa Claus, Shit Santa is legendary and never seen. Unlike Santa Claus, Shit Santa operates 365 days a year, and no one looks forward to his visits.
Don't use that toilet, dude. Shit Santa left a real nasty one.
by Tuftskins April 30, 2009
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a word used usually during the holidays, after opening an amazing present. Also was used in the movie StepBrothers.
holy-santa-claus-shit I got hulk hands for christmas!!!!
by macarron December 15, 2008
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We all know that fat ass that lives up north and its kewl to let him come in your house but if a creep does its bad(personal thought)
but since he was there the when jesus was born he must be holy so.....
when he goes to sit down and take a masive shit... i turns into holy santa claus shit...
example:ryan "hey bryan whats up"

bryan " i just got a d+ on my history :("

ryan " holy santa claus shit"
by mr.smarterass April 17, 2009
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An expression used when something crazy just happened.
Derived from the movie Step Brothers
Guy 1- I just won the lottery. No big deal.

Guy 2- Holy fucking Santa clause shit that's awesome!
by Easton hockey July 22, 2009
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