Article continues below advertisementJenna Bush Hager's April Fools' joke turned out to be a major slip-up.During the Wednesday, April 1, episode of TODAY With Jenna & Sheinelle, the media personality, 44, tried to fake bringing an expensive cake on set before tripping and falling over the treat.Article continues below advertisementTap Here To Add Ok Magazine as A Trusted SourceSource: TODAY With Jenna & Sheinelle/YouTubeJenna Bush Hager accidentally slipped on icing.In a segment titled "The Feed," internet guru and Today editor Arianna Davis Santana introduced a "viral cake.