The sluttiest mustiest foul-smelling girl at a party that one of your drunken friends hooked up with due to your encouragement that she was in fact attractive.
John, I can't believe you boned that sewer monster last night..I was just playin when i said she looks like Britney Spears. She looks more like Aries Spears...
by Chadwell July 16, 2008
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An all intelligent being inhabiting the sewers of North Carolina. His plans for world domination are almost complete but he must wait for the super friends to disband because they're his only enemy (and so is zombie rorshac from the movie - watchmen).

His joys are a 6 pack of beer. 4 chicken nuggets of a 6 mcchicken nugget meal. And sewer.
1: hey dog have you seen the nc sewer monster on da newz?
2: hell yaz homies we about to bust a cap in dat cats azz tryin to be up in r hood da north cacky lacky
1: hell yaz
by NOT THE NCSEWERMONSTER July 31, 2009
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A sexual position in which one party climbs inside a port-o-potty and has their partner sit on the toilet seat while the first party performs oral sex from inside the toilet
"Dude ..Brad smells like shit."
"I know, he just got done giving Angela a Sewer monster"
"Gross"
by AnOcelot July 29, 2020
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