The "Dark Shadows" star won as favorite movie actor at the 26th annual Nickelodeon network's awards extravaganza, while the "Twilight" leading lady was selected as favorite movie actress and female butt-kicker.
"Dude, I was too much of a coward to accept this," she said, embracing the slime slathered on the podium at the University of Southern California's Galen Center.
Pitbull and Christina Aguilera kicked off the silly show with their song "Feel This Moment" and were joined by young backup dancers resembling the smooth-headed rapper and blonde diva. At the end of their performance, Aguilera smashed a button, covering Pitbull and the dancers in the show's signature green goo.
That was just the beginning of the celebrity sliming.
"I guess that's what we call a slime dunk!" Duhamel said.
Duhamel said a record-breaking 350 million votes had been cast for this year's viewer-voted ceremony, which honors kids' favorites in film, music, sports and TV.
Other winners included "Victorious" as favorite TV show, Katy Perry as favorite female singer, Adam Sandler as favorite voice from an animated movie for "Hotel Transylvania," race car driver Danica Patrick as favorite female athlete and "The Hunger Games" as favorite movie and book.