Famous Nathan Sykes
The Nickelodeon Kids Choice TV Awards is something we don't really get in the UK. But getting slimed at the awards is seen as a mark of having made it.
Past slime-ees have included Orlando Bloom, Harrison Ford, Tom Cruise, Justin Timberlake and The Jonas Brothers.
This year Katy Perry, our favourite lady-kisser, was on stage to present an award, looking rather hot in a yellow dress/blue hair combo. But check out what happens to her as she gors to announce who the winner is?