A term used to describe a person's state after drinking to excess. This state is commonly associated with memory black out and a severe hangover the following day.
How was the bar yesterday?
I was absolutely shitstained last night.
by Jagsh February 16, 2009
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An utterly objectionable, despised individual, especially one whose personality is compounded by subnormal intelligence.
Lyle Wright is a shitstain on the ass of the human race. That sawed-off cum-sucking fuckhead would make a good cop.
by fingerman December 29, 2004
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the stain that looks like shit on the mustache of a smoker.
quit smoking, it's bad for you and that shitstain looks like shit.
by chuckybubbles August 25, 2011
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A person with an unusually large buttocks and/or rectum that continually leaves fecal stains on the toilet seat after evacuating their bowels.
Don't go in there after Brian ... he's a fucking Shitstainer
by pcicc December 26, 2016
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A stain on a persons underwear from shit. This normally happens to a heavyset person.

This usually happens by:

1.) Farting too hard
2.) Not wiping after a soupy shit

This can be embarrassing.
Guy 1: LOL did you see that guys shitstain when he was changing!?
Guy 2: Yeah!! It was disgusting! He must have been farting too much.
by MarkMan641 November 26, 2011
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its shit that got hammed into your underwear. occurs when u dont wipe your ass after a soupy shit, some gets stuck on your ass crack and this is called (magoo) this could harden into a poob(see poob), also, if somebody is trying to act funny by doing a fake fart, and that results in shitting in your pants and no funny farting sound, u have gained nothing funny out u it, but only a nasty shitstain on your underwear that is embaressing to yourself and others when they see it, or find out about it...
he took a crap, but all his ass hairs prevented it from reaching the toilet and acted as a net, he also ran out of toilet paper, so he went to the store and he came home and later found a shitstain that got hammed on his underwear
by slapapig September 27, 2003
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