An insulting way to disrespect some minga who is horribly revolting looking. A very discusting person that should be living down in the sewers where they belong.
"Omg, you freekin sewer rat, go back home in the sewers. That's what you smell like."
"Did you see that sewer rat?"
"Ohh, I thought I smealt Sewerage =|"
by Jessie and Bgay December 6, 2008
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a sewer rat describes the most GRIMEY girl on the planet... she wears her polo's under her t-shirts and overuses phrases like "effing" "whore" and "GD"
Sewer Rat 1: OMG you're my effing whore!!!
Sewer Rat 2: i know!! i love you!! you're my GD whore!!
by mi amigooooo October 13, 2005
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an ugly person who has bigg ass teeth and has no freinds and everyone makes fun of them.
erica is a sewer rat and no one likes them thats why they get everyone to hate them!
by joe February 10, 2005
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a t-rone or wack rapper that thinks he can who look like mr ed also with huge teeth trys to sing on his hit single in those jeans
that t-rone is such a sewer rat.
by mucus fact April 3, 2007
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1: Rat that lives in a sewer.
2: One who enjoys anal sex, especially a male homosexual.

See: marmite miner, fudge packer, uphill gardener, etc.
"Time to trap, this place is full of sewer rats"
by oracle August 20, 2004
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A rat that lives in sewers, comes out at night and rapes and pillages the neighborhood
My Uncle Jerry likes to play with sewer rats and pound lumps on Fred Flintstone's head.
by Punk Livingston December 26, 2003
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