As defined by sex coulumnist Dan Savage, the mixture of lube and feces that is sometimes a side result of anal intercourse.

(From: Sen. Rick Sanctorum: R-Pensylvania)
Baby, we got santorum all over the sheets again....
by Tommy Humphreys May 27, 2005
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The far-right, fanatically gay-bashing Republican senator from Pennsylvania who got his hateful little butt kicked by Democrat Bob Casey, Jr. on November 7, 2006, when Rick Santorum lost by a landslide.
The voters of Pennsylvania sent Rick Santorum to the unemployment line during the mid-term elections of 2006, but not before his name came to be defined as "the frothy mixture of lube and fecal matter that is sometimes the product of anal sex."
by Sir Bullwhip November 8, 2006
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Adjective; Absolute, unimaginably appalling, jaw-dropping upper level assholery.
Tommy pretended to help the old lady who had fallen down, only to kick her in the guts instead. His santorumness knows no bounds.
by grittyreboot August 18, 2011
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The sometimes frothy, usually slimy, amalgam of lubricant, stray fecal matter, and ejaculate that leaks out of the receiving partner's anus after a session of anal intercourse. Named, by popular demand and usage, after legislator Rick Santorum because of his homophobic political statements.
"That move was about as slick as santorum!"
by Bohica Zamboni November 28, 2003
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1. A closet case who will help keep theocracy in power in the USA and spread the crusade worldwide.

2. A mixture of feces, KY and pretty boy closet case huckster drool.
There are two theocracies left in the world: Iran and the USA. Christofascists unite! Homo sex is abomination in bible -- immediately before the next "abomination," touching the skin of a dead pig. Down with fags and down with the Superbowl! Vote Santorum!
by Fascistophobe March 19, 2005
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Term coined by San Francisco columnist Dan Savage for the "frothy mixture of lubricant and fecal matter resulting from anal intercourse."
It's a wonder that Rick Santorum hasn't sued Dan Savage for making up the term "santorum" - but he probably doesn't want the kind of publicity that would result.
by Skip Mendler January 26, 2006
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The frothy mix of personal lubricant, fecal matter, and sometimes semen that can occur as a result of anal sex.
Finally, Joe pulled out, wiping the santorum from his manhood on the grey comforter by accident.
by Graniteman December 5, 2005
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