Self explanatory. Often used when you are struck by something painfully obvious, but you never noticed.
Milo, did you know that if you redline your Benz too long the ECU shuts down the gas flow to the injectors?

Redline? MY Benz? Awww... Well, You Learn Something Every Day...
by SeW hat August 15, 2008
mugGet the You Learn Something Every Day mug.