On April Fools' Day, Adult Swim messed with Ricky and Morty fans. The channel screened the first episode of Season 3, slated to start airing this summer. It was a move right out of Grandpa Rick's playbook. Many thought it was an April Fools' Day joke and didn't tune in. It wasn't a joke. The world got its first Rick and Morty episode since 2015.
The lasting effect, beyond excitement for the new season, was that (SPOILERS COMING for Episode 1, Season 3) fans of the show are jonesing for McDonald's Szechuan sauce. As Rick explains while taking an intergalactic agent through a McDonald's drive-thru in a memory, in 1998 McDonald's offered Szechuan sauce in a promotion tied to the Disney film Mulan.