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 28, 2003
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An utterly objectionable and despised individual.. especially one whose personality is compounded by subnormal intelligence.
Sith Whilley is a shitstain on the ass of the human race.
by SNELDAWG January 13, 2006
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An utterly worthless and stupid person who adds nothing but anger and frustration into the lives of others.
by smartwater68 September 9, 2009
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disgusting, loathesome, vile, distasteful, wrathful, belligerent, and more. shitstains are human fecal matter. They are the lowest of the low.
my girlfriends ex is a real shitstain for the way he treated her.
by agent of chaos October 24, 2006
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1)a stain of shit, usually found on clothes or the ground
2)A person that is a stain of shit in your mind
1)His underpants are the one with the huge shitstain on them
2) Shut the fuck up you stupid shitstain
by clow July 14, 2003
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A person who's complete and utterly disgusting, smells like cigarette smoke, is arrogent, thinks that if she bore you she can kill you, and drinks boxed wine.

I mean, who drinks BOXED wine?!
Christina L. B.
.........................
by Royal Rainbow!!!! April 2, 2005
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An utter jerk, scumbag, and loser.
Alec Baldwin is such a shitstain!
by 7samurai December 9, 2002
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