What I leave on my panties. It's brown. It's smelly. And it's MINE.
-Donchu wish your skidmarks were hot like mine.
-Nicole D. has nice skid marks, wink.
by ]{@Rm October 2, 2005
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an elongated stain in the rear of one's underwear caused by one of the following: 1)rubbing of the underwear on an insufficiently wiped anus after excrementing 2)expelling juicy farts (butt cheese) into the underwear over an extended period.
"I think my underwear has a skid mark from farting all day"
by Uncle Stinky May 8, 2004
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When someone does not wipe all the poopies out of there butt after a shit and it stains there underwear.
Kiersten : Oh Chad let's get naked and Fuck! Fuck! Fuck!
Chad : Oh baby you don't have to tell me that twice!!!
Kiersten : Oh that's gross you have Skid Marks on your undies!
Chad : Yeah I had Mexican for lunch and been shitin all day can't seem to get all the poop wiped out!
Kiersten : Uh go take A shower or no fucky!
Chad : Maybe you can join me and scrub all the poopies out for me!
Kiersten : Uh Go Fuck Yourself!
by SlopNChop May 11, 2017
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A fecal stain that is visible on one's undergarments.

Also presents in a less structural (and lesser known) form, typically developed from excessive "dry farting". In this form, the skidmark develops in a larger region, yet its definition is not as clear. Essentially, it is representative of a consistent gaseous pounding of one's underpants over a long period of time, and while fairly rare, is unmistakable. Usually, this effect is understandable to about 1/10th of all humans.
I just ran a red light and blasted a massive skid mark all over my BVD's.
by A. Boyd January 13, 2007
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n. Poo poo stain in the seat of one's underpants.
I don't wipe; I've learned to live with the skid mark.
by The Grammar Nazi December 19, 2001
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**Marks on your underwear left by shit, usually permanent. Caused by Sharting (A fart that turns out to be a shit), also caused by photo finish shits, juicy farts, not wiping completely, and most generally crapping your pants.
**Side effect- buying dozens upon dozens of new pairs of underwear.
**Interesting Fact**
Skid Marks are the most permanent thing on this Earth, no matter how much you scrub they stay. No matter how much bleach you dump on your underwear it doesn't even fade.
**Synonym- Racing Stripes
**Dude, did you just shit your pants? You are going to have major skid marks.

**What color where these when you originally bought them?
by Ogrenator April 11, 2008
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A line or a spot of fecies left in one's underwear, either because they didn't wipe properly or they did not get all the poop out of their anus.
Mom, I left some nasty skid marks in my undies.
by earth._.turd January 26, 2017
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