Slime O'clock tolled with a splash for John Stamos at the Kids' Choice Awards on Saturday in the prank climax of the evening.
The unwitting 52-year-old star of Fuller House received a hefty face-full of neon lime goo from the deft arm of Jace Norman of Henry Danger.
The cheeky 15-year-old crept up behind Stamos, who was distracted by posing to have his photograph taken with Blake Shelton (the fool), and doused him with a tidal wave of gunk.
Norman then went in for a no-worries-dude handshake but Stamos head-butted him in the chest, smearing Norman's pristine striped white jumper with slime and apparently breaking the teenager's phone.
The annual Nickelodeon show awards those voted the best in TV, movie and music acts by the channel's viewers. 2016 winners include Star Wars: The Force Awakens as Favorite Movie and Will Ferrell and Jennifer Lawrence as Favorite Movie Actors.
Other than the usual award of an orange logo blimp, some celebs receive the honor of a vigorous sliming.
Others who were slimed this year were Fifth Harmony, Jason Sudeikis, Josh Gad, Cameron Dallas, and Blake Shelton.
Past goo victims since the prank began in 1988 include Will Smith, Tom Cruise, Johnny Depp, Orlando Bloom, Justin Timberlake and Katy Perry.
See the hilarious video here:
It's even better in slo-mo:
Which celeb deserves a heavy sliming?
Source: via EW