Marilyn Manson -- Infected With Kenny Powers Fever
When his ass was 19 years old, Kenny Powers changed the face of professional baseball ... now he's changing Marilyn Manson's wardrobe.

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Manson rolled through a mall in L.A. yesterday with a hat that was branded with Kenny's new catchphrase from his awesome K-Swiss campaign.

In case you weren't aware, Kenny -- the main character from the show "Eastbound and Down" -- was featured in a few web ads for the shoe company ... and if you don't mind the cussing, you can check 'em out here.

Nice mullet.