Shit marks is a very serious case of skids, suffered by the victim for most of his adult life
"Damn Steve....what the fuck is that brown mark on the back of your jeans?"

"Er.....I sat on a caramac mate"

"Like fuck you did....You've got shit marks again haven't you?"

by Big Kev Dial December 31, 2014
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A shit so powerful it perminatly stains the toilet bowl.
"I'm bout' to take a massive turbo charged tread mark shit." -said shortly before absolutely destroying the local Ikea toilet display.
by JustSomeBeans January 09, 2022
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