During a ceremony , sometimes a celebrity presenter or award winner might not know when they are going to be slimed onstage or offstage , though as the years went on , getting slimed became more of an honor , and less of the comedic humiliation of where the concept originated , with the early Nickelodeon series '' You Ca n't Do That on Television '' . Hosts of the show have also been slimed , especially in recent years , and occasionally celebrities not attending the awards have been slimed via video segment , such as when Rosie O'Donnell tricked Melissa Joan Hart into getting slimed on the set of '' Sabrina the Teenage Witch '' in 2001 , or when Amanda Seyfried and Josh Hutcherson were slimed at a KCA watch party in 2013 . Celebrities sitting in the audience are also fair game for being slimed , as Mandy Moore first learned in 2007 , and Halle Berry later found out in 2012 . Although Les Lye was the only celebrity to be slimed at the 1988 Awards , a video was shown during the show of then Nickelodeon president Geraldine Laybourne saying the magic words and getting slimed with the original '' YCDTOTV '' recipe , much to her dismay , proving that not even the network president was safe from the slime . Last but not least , in addition to the celebrity slimings in 1992 , the entire audience was slimed at the end of the show , which began a long running tradition known as '' The Final Slime '' , which is still in effect as of the 2019 Awards
2019 Awards
2019 Kids' Choice Awards
Nickelodeon Kids' Choice Awards