When the stars of "The Young and the Restless" aren't on screen, they're usually serving up laughs just behind the camera. "Our fabulous makeup artist on set has this magic trick that he plays on every single cast member," Kelsey Wang told The List, recalling that she fell victim to the prank — which apparently involves a slight scare — earlier this year.

While this top-secret practical joke is never included in the "Y&R" storyline, the stars' reactions are always recorded on camera to be saved forever. "You will not believe [how] some of the most serious actors on the show react," Wang said. "It's so funny."

The laughs don't stop there, either. "Everyone cracks jokes," Wang told us. Believe it or not, it's these lighthearted moments that help make the most emotional scenes even easier to portray. "The more comfortable you are on set, the easier it is to film," she said. "The more nervous you are, the harder sometimes it is to film these scenes."

New episodes of "The Young and the Restless" air weekdays on CBS.