Winchell played several onscreen characters, including Knucklehead Smiff's father, Bonehead Smiff. "Mook" is Italian-American slang for knucklehead or idiot. The name means "knucklehead or idiot". Winchell's best-known ventriloquist dummies were Jerry Mahoney and Knucklehead Smiff. Vehicles included the Cheapskate, Turtle Trooper, Turtle Blimp, and Foot Knucklehead. Paul would frequently use his dummies, Jerry Mahoney and/or Knucklehead Smiff on his program. He modified two other copies to create Knucklehead Smiff. He currently endorses Ovation Guitars, ESP Guitars, Knucklehead strings and Kustom Amplification. Knucklehead is a 2015 American drama film directed by Ben Bowman. The debut single was "Knucklehead" followed by the album "Psycho Power" in 1997. Bridgeport brews a barleywine named "Old Knucklehead" where a "Knucklehead" is inaugurated every few years. A Knucklehead engine is displayed disassembled into several pieces. She also starred in the independent drama film "Knucklehead" as an abusive mother. It used a version of the "Knucklehead" OHV engine that powered the EL in form. He is currently fronting the classic rock band Knucklehead in the Pacific Northwest.