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Someone who is intensely ugly, with a face that looks like they attempted to peck a shredder - hence their face looks awful. Can be easily shorted to just "Shredder"

Phil: Hey Joe, check out that really ugly chick!
Joe: Fuck me, she's a right shredder pecker!

Joe: Phil you are so gay
Phil: Fuck off you shredder!
by matrixbadger February 16, 2009
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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