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A nickname for Roger Federer, made by slapping his last name onto The Shredder, the biggest butt-kicking villain from the Teenage Mutant Ninja Turtles. Sometimes used for Rafael Nadal too, since one of the Turtles is named Raphael.
Shredderer, you just destroyed my tennis game!
Federer is the Shredderer, and I'm just here to watch.
Rafael Nadal is the Shredderer in disguise.