A "Pecker Shredder" is when a man or a woman with braces is giving you a blowjob.
" Dude, she normally gives hella good head, but last night she was one hell of a pecker shredder."
by Leroy_Da_Nigga January 12, 2016
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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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