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

An utterly objectionable and despised individual.. especially one whose personality is compounded by subnormal intelligence.
by SNELDAWG January 13, 2006

An utterly worthless and stupid person who adds nothing but anger and frustration into the lives of others.
Barack Hussein Obama is the world's worst shitstain.
by smartwater68 September 9, 2009

disgusting, loathesome, vile, distasteful, wrathful, belligerent, and more. shitstains are human fecal matter. They are the lowest of the low.
by agent of chaos November 6, 2008

1)a stain of shit, usually found on clothes or the ground
2)A person that is a stain of shit in your mind
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
2) Shut the fuck up you stupid shitstain
by clow July 13, 2003

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?!
I mean, who drinks BOXED wine?!
Christina L. B.
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by Royal Rainbow!!!! April 1, 2005

Alec Baldwin is such a shitstain!
by 7samurai December 9, 2002
