The line comes from Rick and Morty, the Adult Swim animated series that premiered in 2013, where Rick regularly drags Morty into risky interdimensional jobs while insisting they will be brief. His twenty minute adventure promise became a running joke and a popular meme format online, reused whenever a supposedly short task balloons into something huge. Fans quote it for travel plans, work tasks and game sessions that overrun, because the show built its humor on Rick under selling danger and Morty paying the price.