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When you do a poor job of wiping your ass after a big shit, and you're left with a stain in your underpants that looks like an aerial view of a mountain range.
"Bro I only had 1 sheet of toilet paper left, I got a huge Pocono streak in my boxers now"

"I accidentally sharted in my pants and now I have a Pocono streak to clean up"
by Gary Longwood March 31, 2018
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