Slime flies at Kids' Choice Awards

At the 25th annual Kids' Choice Awards, the slime runneth over.

Host Will Smith opened the 25th annual Kids' Choice Awards promising a record amount of the show's trademark green gunk. Though some 20 awards are presented at the KCAs, the real suspense isn't who will take home a "Blimp" (the show's Oscar), it's when and on whom the slime will spill.

Halle Berry was the first to be covered, but she was far from alone. She was joined by "Twilight" star Taylor Lautner (who won favorite "buttkicker"), "Glee" star Chris Colfer and male singer winner Justin Bieber, who was utterly drenched along with Smith at the end of the show.

The KCAs are Nickelodeon's annual celebration for kids, and it's often the most-watched children's program of the year.

"This is, like, the coolest award show ever," said "Twilight" star Kristen Stewart, accepting the award for favorite movie actress.

First lady Michelle Obama presented "the big help" award for charity work to Taylor Swift. Upon receiving the award, the pop star said, "I am freaking out."

Winners are chosen from voting online. Selena Gomez won for both favorite TV actress and female singer. Adam Sandler took home the award for favorite movie actor.

And Katy Perry, shortly after performing, was given the award for favorite voice in an animated movie for "Smurfs."

"The only reason why I'm still here today -- and remember this -- is because I've never grown up!" Perry told the young audience.

More than 7.3 million watched last year's awards. This year, Nickelodeon badly needs the KCAs to continue such success. In March, for the first time, the Disney Channel beat out Nickelodeon in average total daily viewers -- a title Nickelodeon had held every month since 1995.

Nickelodeon's own series "Victorious" won best TV show. Jake Short, star of the Disney Channel's "A.N.T. Farm," won best TV actor.