Lines that ur anus crack leaves in ur undies or on things one might sit upon.
Skid Marks in ur undies: Usually smelly poopie turd. May vary in color.

Skid Marks on things u sit on: Could be blood from women who sit on the seat cover while they are on the rag, can also be poopie turd.
by XratedMaiden December 5, 2002
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poop that leaves lines in your underpants
i pooped and left skid marks
by mike February 13, 2003
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when you have shit in your underwear and get a poop mark on your underwear
person A: "i took that bitch panties off and she had skid marks"
person B: "what the fuck"
by Cenious October 8, 2020
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Ones overlooked fecies left in ones underpants.
Mr. wheeler took off his pants and said "damn this skid mark is going under the bed mattress."
by Cody Wheeler June 30, 2006
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shit that is streeked in ur under wear (a nice line of shit basicly)
by pat grundle February 6, 2003
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is a person who is in the lack of wippeing their ass after a bowel movement.......
akward.

tip:
wipe front to back. ------>
eww, joey what are ya doin? dont fuck marla she has skid marks!
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