No Brainer Day is celebrated on February 27, 2019. It's easy to celebrate it: just be happy about its existence! No-brainer is a term used to denote a problem that allegedly has a very easy solution obvious to all. The term originated in engineering jargon, but grew in popularity during the 1990s and 2000s, and is now common in business environments. The claim that a problem is a "no-brainer" may be a way to shut down dissent. Got to do chores which require thinking or analysis of any kind? Not today. Sit back and give your brain a vacation day.